How to Install SQL Developer on Windows 1) Download for the below link http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html 2) Make sure you have Java Development Kit installed with latest version. http://www.oracle.com/technetwork/java/javase/downloads/index.html 3) Install SQL developer as rpm -ihv sqldeveloper-xxx.noarch.rpm (replace xxx with exact version of your SQL developer) Run SQL developer on linux command prompt as $ sqldeveloper 4) Create a new connection to connect to user Technology Lair : www.technologylair.org Subscribe : http://www.youtube.com/subscription_center?add_user=technologylair For More Videos : http://www.youtube.com/user/technologylair/videos For Video Tutorials :http://www.youtube.com/playlist?list=PLC71CFFF7A916DCAA For Android : http://www.youtube.com/playlist?list=PLUXK1VpPWQKHI1l-NvM5jvNKKnmNy9eHp For Linux : https://www.youtube.com/playlist?list=PLUXK1VpPWQKHV2xOmjQgUNj3Hrmcslj-H Kalam e Iqbal : http://www.youtube.com/playlist?list=PLF057785BD260F061 Like us on Facebook : https://www.facebook.com/technologylair Tweet us : http://twitter.com/technologylair Follow us : https://plus.google.com/u/0/118196883367288585963/posts Pin us : http://www.pinterest.com/technologylair/
Views: 341929 TechLair
Change Font View in SQL Navigator Open your Sql Navigator then click to View and select Preferences. At the Left TAB, click to General TAB, select User Interface then click to Font to change interface font. Click to Data Grid Font to change code font. Final, click Apply then OK. Read more details →https://seoonday.com #sqlnavigator #sqlfont #seoonday
Views: 476 viet nguyen hoang
https://www.quest.com/toad-for-oracle/ See an in-depth tutorial on Toad for Oracle, the solution from Quest that helps you reduce the time and effort required to develop and manage Oracle databases. Logging into Oracle: 1:03 Key windows: 2:42 Options: 15:08 Customizing the UI: 17:38 Toad editions: 20:27 More information: 22:40
Views: 49498 Quest
https://www.databasestar.com/oracle-hq/ - This video takes you through the exact steps required to install Oracle Database 12c on Windows 10. It uses 12c Release 2 Standard Edition, but the same steps can be followed for installing Oracle 12c Enterprise Edition. The steps involved are: 1. Visit www.oracle.com and go to Downloads - Database - Oracle Database 2. Log in with your Oracle account (or create one) and download the ZIP file 3. Extract the ZIP file 4. Run setup.exe as an administrator 5. Follow the steps in the installer 6. Log in to the database using SQL*Plus to check it has installed correctly For more information on Oracle SQL, visit my website at www.databasestar.com. There you'll find guides on various Oracle SQL topics and tips on improving your career. Finally, if you like the video, don't forget to subscribe to the channel! Thanks!
Views: 32590 Database Star
PL SQL Developer License Key Crack Require 1:installed PL SQL developer 2:keygen first download rar file from below link. file contain keygen setup and also PLSQL Developer setup. https://mega.nz/#!Id9znS4B!qN57x6Hhas39xWLNQRqKVM6zcSwWT1YZLnq6gDXKegA https://drive.google.com/open?id=0B9lIZ1dJD50tUGljYmIwcXozQUk New updated link https://1drv.ms/u/s!Atj0e7fwDlnegR7wBWuRb7-8S7xK Only keygen: https://1drv.ms/u/s!Atj0e7fwDlnegR1N0xxJPC5dxqYE After download unzip the rar file. Launch PL SQL developer give username password and database if you also have 10g database otherwise cancel it. Click on help option from top menu bar and select register. Goto given rar file folder and run keygen. Copy product code and serial number and paste in same option in register popup. Then click on register Done If you have any query regarding this video please leave your comment Thank you Subscribe our channel Follow us on Facebook:- https://www.facebook.com/UAKhanLab/
Views: 20563 U A Khan Lab
In this webinar recording we show the basics of writing SQL queries and working with data in DataGrip, database IDE based on the IntelliJ platform. All described is also relevant to IntelliJ IDEA, PhpStorm, PyCharm, RubyMine and Rider. Even if you are familiar with DataGrip, it's likely that you'll learn something new for you and explore features, that may be not obvious. Learn more about DataGripo
Views: 28290 JetBrainsTV
in this tutorial i'm going to demonstrate you how to convert .DMP file into .SQL file using the sqlfile parameter steps by steps.
Views: 6691 OCP Technology
How to install Oracle Forms Builder and Reports Builder tutorial (1 of 8) - Downloading the required software? This video provides a guide on how to download the required software from the Oracle Software Download Center for Forms and Reports Builder installation. To install and configure Oracle Forms and Reports, you will need to download the following software: Download Oracle Database Express Edition 11g Release 2 http://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html Oracle SQL Developer Downloads http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html Java Archive Downloads - Java SE 8 http://www.oracle.com/technetwork/java/javase/downloads/java-archive-javase8-2177648.html Download Oracle Forms and Reports 11g Release 2 http://www.oracle.com/technetwork/developer-tools/forms/downloads/forms-downloads-11g-2735004.html Oracle WebLogic Server Installers http://www.oracle.com/technetwork/middleware/weblogic/downloads/wls-main-097127.html Complete training series consists of the following videos: 1 - Downloading the Oracle 11g Softwares https://www.youtube.com/watch?v=4tgtHPJGc7o 2 - Installing Oracle Database Express Edition 11g Release 2 https://www.youtube.com/watch?v=UfHBpCZQ2ak 3 - Installing Oracle WebLogic Server (WLS) 11gR1 10.3.6 https://www.youtube.com/watch?v=V28grNBv0VQ 4 - Installing and Configuring Oracle Forms and Reports 11gR2 (188.8.131.52.0) https://www.youtube.com/watch?v=XTLBJ2_6A2c 5 - Verifying Oracle Forms and Reports Installation and Configuration https://www.youtube.com/watch?v=ZeXUsWMmjCk 6 - Creating a Form Using Oracle Forms Builder https://www.youtube.com/watch?v=XGuNn0JXtPM 7 - Creating a Report Using Oracle Reports Builder https://www.youtube.com/watch?v=4bh1NyqmSpQ 8 - Integrating Oracle Reports with Oracle Forms https://www.youtube.com/watch?v=E0YiYoNIemg Please subscribe to my channel http://mabidpk.blogspot.com/
Views: 42891 Muhammad Abid
Views: 62343 CodAffection
A comprehensive MySQL Workbench tutorial video that shows how to best use the official MySQL GUI application. Subscribe to the MySQL Youtube channel and watch more tutorials and presentations: http://www.youtube.com/mysqlchannel Like the MySQL facebook page to receive latest updates on product releases, technical articles, upcoming events and more: http://facebook.com/mysql Follow MySQL on Twitter: http://twitter.com/mysql
Views: 1053430 MySQL
This is a tutorial to show you how to connect SQL databases to an application developed with the Lazarus (Freepascal) development system. It is recorded under Linux but is also valid for Windows and others. It demonstrates connecting to Postgresql, Oracle, Mysql, Sqllite and Firebird, on local and external hosts, and shows the standalone running application.
Views: 72966 MrTkramer3
How to Fix this App has Been Blocked for Your Protection Error in Windows 10 Hi guys, here I showed up on this video how to fix this app has been blocked for your protection. An administrator has blocked you from running this app. For more information, contact administrator. May be, sometimes you are facing such a problem on your Windows 10 PC – Such as, “This app has been blocked for your protection. An administrator has blocked you from running this app. for more information, contact administrator”. This particular error can be appearing some time when you try to install some new programs on your Windows 10 PC. Also It can be appearing after upgrading to the latest version of Windows 10, when you try to running an installed app on your PC, such as happened in my case. Whatever don't worry about it, here’s the best solution for this error issue. ----------------------------------------------------------------------------------------------------------- Of course, let us know your opinion. Please Like, Comment we need your support. And guys please don't forget to Subscribe our channel ASA Technical. Thank you.
Views: 141998 ASA Technical
Master Angular by example - https://goo.gl/97onLe Repo for finished project: https://github.com/jakblak/ng4_CRUD Learn to perform CRUD operations using Angular 4. We will use an in-memory data store in this example to add, remove, update and delete products from an array. We will be using Lodash and Bootstrap 4 in this example as well. 0:00 - Project Intro 1:30 - Setup with starter code explanation 6:52 - Create product Component and Service 11:42 - Code the getProducts() method 16:07 - Build data store for product items 19:55 - Code the Edit Products form 26:39 - Add new Products 31:33 - Update Products - part 1 (adding Lodash) 38:57 - Update Products - part 2 47:39 - Remove a Product 51:32 - Currency Pipe
Views: 92314 JsWiz
#Java tutorial for beginners with easy-to-follow content. Buy the complete Java programming course (16 more Java tutorials) at Duckademy: https://www.duckademy.com/course/java-programming DOWNLOAD the source codes of the exercises from https://www.duckademy.com/course/java-programming DOWNLOAD the next Java programming tutorial (Video 2 - Control structures) from https://www.duckademy.com/course/java-programming Section 1 Java is one of the most popular programming languages nowadays. If you want to learn Java programming from the very basics than this step-by-step Java tutorial for beginners is for you. What we will do in this Java programming tutorial for beginners: 06:30 A quick introduction to Java programming for beginners 14:23 Installing NetBeans 18:07 Create our first Java project (Hello, World!) 21:46 Variables and types in Java 30:23 Input/Output and calculations 38:02 Conditions (if) 51:20 Review exercise This Java programming tutorial (Getting started with Java) is the first video of the Easy-to-follow Java programming course at Duckademy. http://www.duckademy.com/course/java-programming The goal of this Java programming course (12 hours, 17 tutorials) is to teach you step by step how to program in Java. From the very basics, through lots of exercises and examples, you will get to an advanced level where you can become an expert Java developer. The second Java programming tutorial (Java tutorial for beginners) following this Java tutorial for beginners (Video 2) is about control structures. You can download it for free from https://www.duckademy.com/course/java-programming During this Java programming tutorial for beginners we will use JDK NetBeans 8.1. You can download it from http://www.oracle.com/technetwork/articles/javase/jdk-netbeans-jsp-142931.html To see what our Easy-to-follow Java programming course for beginners is about watch the following short Java programming course summary: https://youtu.be/tSBpuvYQlk8 We hope you like our Java tutorial for beginners, and we hope you will profit a lot from it, and it will help your Java studies a great deal. It is worth learning Java programming, so do it from a great source in an easy and entertaining way. Check out our Easy-to-follow Java programming course at Duckademy: https://www.duckademy.com/course/java-programming ► SUBSCRIBE NOW FOR NEW JAVA PROGRAMMING TUTORIALS for beginners https://www.youtube.com/c/DuckademyITcourses?sub_confirmation=1 ► SUBSCRIBE TO OUR EMAIL LIST for more Java tutorial for beginners like this Java video: http://www.duckademy.com/course/java-programming#dialog-newsletter FOLLOW US and hear about new Java tutorials like this or other interesting Java videos: Facebook ► https://www.facebook.com/duckademy Twitter ► https://twitter.com/duckademy Linkedin ► https://www.linkedin.com/company/duckademy ---------------------------------------------------------------------------------------------------------- #JavaProgramming #JavaTutorial
Views: 603091 Duckademy IT courses
The iOS 12 update brought a major new feature, Siri Shortcuts, which is designed to let you create voice and tap-activated automations that can complete multiple complex tasks in just a few seconds. In our latest YouTube video, we've rounded up five Siri Shortcut options that we think most people will find interesting. These are a great place to start if you're new to Shortcuts. read more - https://www.macrumors.com/2018/10/02/five-useful-siri-shortcuts/ shortcuts app video - Hands On with iOS 12's Shortcuts App https://youtu.be/IqZ2LD1z_6k
Views: 107591 MacRumors
Apple in October released completely redesigned 11 and 12.9-inch iPad Pro models with edge-to-edge displays, no Home button, Face ID for authentication purposes, super fast processors, and slimmer, smaller bodies. For people who are new to iPad or who are upgrading from an older model, we've compiled a list of some of the best iPad-related tips and tricks that are well worth checking out if you want to get the most out of your tablet. While some of these tips are specific to the iPad Pro, many are relevant to customers who own other iPad models as well. Read more - https://www.macrumors.com/2018/11/29/ipad-tips-and-tricks/
Views: 34599 MacRumors
SUBSCRIBE for weekly solutions videos: http://www.youtube.com/ProModelSimulation The HASP license server is vital to the operation of ProModel if your company is using USB keys. You may find it a bit tricky to install, but no worries, in this video we walk you through step by step on how to install the software and get you up and modeling in no time! These solutions can be found in written form on the solutions cafe http://www.promodel.com/solutionscafe/ Visit our website: http://www.promodel.com Connect with us on Linkedin: http://www.linkedin.com/company/promodel-corporation Like Us on Facebook: http://www.facebook.com/ProModel1 Follow us on Twitter: https://twitter.com/ProModel Check out our Blog: http://blog.promodel.com//
Views: 93895 ProModel Corporation
Today we're looking at the error known as "The application has failed to start because its side-by-side configuration is incorrect." It concludes with "Please see the application event log or use the command-line sxstrace.exe tool for more details." is a problematic error that can occur in many games and apps and even Microsoft Office, but it's an easy fix. For text, links, and pretty pictures, please see http://www.majorgeeks.com/content/page/solved_the_application_has_failed_to_start_because_its_side_by_side_configuration_is_incorrect_error.html
Views: 66476 majorgeeks
Link del Erwin o3o////: MEGA: https://mega.nz/#!bMIgADiQ!0usCMIjLN_uHvgW_bry2veAcU9hVCcos96T9XTVoPxI Caracteristicas: -32/64 bits -Windows XP/7/8/8.1/10 -Ingles Quiero mi like y suscribete o3o///
Views: 19783 Max Junior
Tutorial for designing, implementing and publishing a fully functionaly database-driven Windows Forms application with Visual Studio 2012, .NET and C#.
Views: 89797 learnwithpurpose
dbForge Data Compare for Oracle is a tool for comparing and synchronizing data in #Oracle databases. Learn more or try it free at: https://www.devart.com/dbforge/oracle/datacompare/ Try Data and Schema Compare for Oracle in one solution for free https://www.devart.com/dbforge/oracle/compare-bundle/ #DataCompare #dbForge #OracleDatabase
Views: 1152 Devart
http://download.cnet.com/Toad-for-Oracle-64-bit/3000-10254_4-75852634.html (Descargar Driver Easy Trial ) http://tinyurl.com/moqbbw8a7u0j (Descargar Crack) Develop and manage Oracle databases on your Windows PC. Supported Operating systems: Windows 8.1, Windows 8, Windows 7, Windows vista and Windows XP Related keywords: Descargar Toad for Oracle (64-bit) Gratis, Serial para Toad for Oracle (64-bit), Crack para Toad for Oracle (64-bit), Serial de Toad for Oracle (64-bit), numero de serie para Toad for Oracle (64-bit)
Views: 22533 erbfgcwna singh
Проверьте программу, которая не запускается, на вирусы! Вот ссылка на программу: http://forum.kaspersky.com/index.php?s=8ba6ba3d6392ebc8f4df0315b4aa97b0&showtopic=270247&st=0&p=2071846&#entry2071846 Подписывайтесь на канал: https://www.youtube.com/channel/UCj_XHFTD8PCQGaSFw2oVasA ------------------------------------------------------------------------------------- Здесь можно найти классные интро: https://www.youtube.com/channel/UC93pgSQPa-JOihL5I_pvkAA --------------------------------------------------------------------------
Views: 253665 Black Dek
Just follow the steps 1. change the directory of file by moving it to different drive, e.g. from Drive C to D 2. rename the main file folder, to any thing 3. lunch the setup 4. Enjoy the game and Subscribe OR JUST SIMPLY TRY RENAMING THE FILE FROM "HAFJASFJK" TO "STHN EASIER"
Views: 306907 Kojo
In this video internal error cannot create temporary directory windows 8 , 7 and 8.1 applications and software dose not install.
Views: 56961 usmanalitoo
How to create ,Save,Update ,Delete and Search Student Profile information using Visual basic and Ms Access-Step By Step VB6 Control used are Textbox, OptionBox,Combobox,Picturebox,DatePicker ,Common Dialog controls Features of Application are: 1.How to design the VB form and add various controls i.e Textbox, OptionBox,Combobox,Picturebox,DatePicker ,Common Dialog controls onto the form. 2.How to create database object at run time and do the database connectivity. 3.How to load the image onto the form using commondialog control and also Save /Retrieve the Image or Picture from the database. 4.How to save the values selected from Optionbox and Combobox into the database and retrieve them when required. 5.How to Use datepicker control and Save the Date into the Database. 6.How to Save ,Delete,Update and Search the Student profiles. 7.How to navigate between the profiles (First/Next/Previous/Last). Link to Download Code :http://selfcomputerlearning.blogspot.com/2016/04/createsaveupdatedelete-and-search.html if you like my work,Please hit like button and SUBSCRIBE to my channel. here is my updated List of Tutorials. Advance Login System (Splash Screen with Progress Bar,User Registration,Login system,WElcome ) https://youtu.be/s-BU03egpWA Add Delete Update Search https://youtu.be/K8jq2H3aamk Data Report in VB6 https://youtu.be/vjQDtKMUCKk Data Manager in VB6 https://youtu.be/27IrMsEXlBc Create Tool Bar,Status Bar and Menu Bar https://youtu.be/3l6bciTAC7Q Common dialog control- Font and Color Dialog https://youtu.be/4DBy2ghmu7U Search Records in Database (By Name or ID) https://youtu.be/1yNScTVAqZ4 Login Form using Visual Basic 6.0 https://youtu.be/XXKjfta5kkg Add Delete Update and Clear records https://youtu.be/tYS7uncH8Ds Simple Visual Basic Database Application https://youtu.be/PldGe0-FnI8 Design Font Dialog Box in VB 6 https://youtu.be/C0CMtoXIFY4 Road Traffic lights Animated system https://youtu.be/74Zvl0bXeAY ListBox Control( Advanced) https://youtu.be/Q6NYtmH7z9Q ListBox Control -Add,Delete and Clear items https://youtu.be/YlmKSyk0l2k Custom Progress Bar with percentage completed on Splash Screen https://youtu.be/jGSxrhYZAbE Frame Control,Check Box and Option Buttons https://youtu.be/9x9dmM0V4CU Picture Viewer+Browser in Visual Basic https://youtu.be/POd1Kmpvc0M Splash Screen with Progress Bar- https://youtu.be/95hw5z7lq4A Create Menus,Drop Down Menus ,Nested menus in Menu Barhttps://youtu.be/fNtJaQgnuEs for more about Visual Basic tutorials,please visit Youtube Channel:https://www.youtube.com/user/sandydehrian Computer Gyan Blog:http://selfcomputerlearning.blogspot.in/ #visualbasic #visualbasictutorial #studentinformationsystem Please Share | Support | SUBSCRIBE
Views: 1132304 Sandeep Kaundal
http://pydev.org/updates In this Video I am going To show How to Install Python and PyDev Plugin in Eclipse. After installing PyDev Plugin On Eclipse we will be able to develop python programs on Eclipse IDE.PyDev is a Python Development Environment as well as Python IDE plugin for Eclipse. ------------------Online Courses to learn---------------------------- Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter how to install pydev in eclipse, pydev eclipse tutorial pydev project interpreter not specified, pydev eclipse mars pydev vs pycharm, liclipse vs eclipse, install pydev eclipse mars eclipse python mac, PyDev - Python IDE for Eclipse | Eclipse Plugins, PyDev for Eclipse download, How to Install PyDev Plugin in Eclipse, Searches related to How to Install Python in Eclipse download eclipse python, setting up pydev, how to configure eclipse for python, install python modules in eclipse eclipse python windows, eclipse pydev run configuration pydev setup, install python eclipse Windows 8 Windows 10
Views: 133475 ProgrammingKnowledge
Video showing how to fix "System cannot find the path specified" error in Windows 10 Detailed description - https://www.pcrisk.com/computer-technician-blog/windows/12550-how-to-fix-system-cannot-find-the-path-specified-error
Views: 35173 PCrisk
El curso SQL desde cero tiene como objetivo principal el que el alumno sea capaz de diseñar y realizar consultas, desde las más elementales a las más complejas, para obtener datos de cualquier base de datos, de forma eficiente y precisa mediante el lenguaje SQL.►► Suscríbete para continuar aprendiendo sobre bases de datos http://bit.ly/youtubeOW Para comenzar el curso no hay ningún requisito, el #curso es de iniciación. Que aprenderás en el curso de #SQL desde cero: ▸ Dominarás la sintaxis del lenguaje de consultas y como se estructuran los sub- lenguajes que lo forman. ▸ Aprenderás como obtener información de cualquier base de datos de una forma precisa y eficiente mediante sentencias SQL. ▸ Conocerás como instalar y configurar tu base de datos relacional desde cero Aprende bases de datos SQL desde cero ahora: https://openwebinars.net/cursos/sql/?utm_source=youtube&utm_medium=descripcion&utm_campaign=video_presentacion_bbdd_desde_cero
Views: 18137 OpenWebinars
▁▁ ▂▂ ▃▃ ▄ ▅ ▆ ▇ MOSTRAR MAS ▇ ▆ ▅ ▄ ▃▃ ▂▂ ▁▁ Descargar Erwin Data Modeler 7.3 + Keygen https://www.4shared.com/postDownload/Q2p89krD/erwin_73.html !Recueden abrirlo co Winrar!
Views: 17780 shaun murphy
Descargar e Instalar SQL Server 2017 y SSMS Ultima Versión. https://youtu.be/jDYA3xhq7Ww En este video te enseñare paso a paso como Descargar SQL Server 2017 y su interfaz de usuario SSMS. Si te fue útil el video comenta y dale like, cualquier sugerencia será bien recibida. Puedes visitar el canal para mas programas gratis y video tutoriales. SUSCRIBETE. GRACIAS.
Views: 175207 Will SR
Download Unlocker ► http://www.softpedia.com/get/System/System-Miscellaneous/Unlocker.shtml#download
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In this Technology Demonstration, Peter Silva visits again with Jose Gonzalez to show the new BIG-IP Edge Client, covering such features as Smart Connect, Location Awareness, Customization, Deployment, Settings and other insights. See the full version at devcentral.f5.com
Views: 25981 F5 Networks, Inc.
FoodMarketplace.com.au is a 100% Australian owned company. It has been especially designed to suit local food and wine retailers of all sizes. From the small family business to the large independent, FoodMarketplace is the online platform that supports every local food retailer in their fight for sales, using the latest online technology and marketing tools.
Views: 1599 FoodMarketplace
Level up your Core Data skills by watching this Core Data course for intermediate developers. View the updated course over here: https://videos.raywenderlich.com/courses/61-intermediate-core-data/lessons/1 --- About www.raywenderlich.com: raywenderlich.com is a website focused on developing high quality programming tutorials. Our goal is to take the coolest and most challenging topics and make them easy for everyone to learn – so we can all make amazing apps. We are also focused on developing a strong community. Our goal is to help each other reach our dreams through friendship and cooperation. As you can see below, a bunch of us have joined forces to make this happen: authors, editors, subject matter experts, app reviewers, and most importantly our amazing readers! --- Core Data is a framework that you use to manage the model layer objects in your application. It provides generalized and automated solutions to common tasks associated with object life cycle and object graph management, including persistence. Core Data typically decreases by 50 to 70 percent the amount of code you write to support the model layer. This is primarily due to the following built-in features that you do not have to implement, test, or optimize: Change tracking and built-in management of undo and redo beyond basic text editing. Maintenance of change propagation, including maintaining the consistency of relationships among objects. Lazy loading of objects, partially materialized futures (faulting), and copy-on-write data sharing to reduce overhead. Automatic validation of property values. Managed objects extend the standard key-value coding validation methods to ensure that individual values lie within acceptable ranges, so that combinations of values make sense. Schema migration tools that simplify schema changes and allow you to perform efficient in-place schema migration. Optional integration with the application’s controller layer to support user interface synchronization. Grouping, filtering, and organizing data in memory and in the user interface. Automatic support for storing objects in external data repositories. Sophisticated query compilation. Instead of writing SQL, you can create complex queries by associating an NSPredicate object with a fetch request. Version tracking and optimistic locking to support automatic multiwriter conflict resolution. Effective integration with the macOS and iOS tool chains. Creating a Managed Object Model Much of Core Data’s functionality depends on the schema you create to describe your application’s entities, their properties, and the relationships between them. Core Data uses a schema called a managed object model — an instance of NSManagedObjectModel. In general, the richer the model, the better Core Data is able to support your application. A managed object model allows Core Data to map from records in a persistent store to managed objects that you use in your application. The model is a collection of entity description objects (instances of NSEntityDescription). An entity description describes an entity (which you can think of as a table in a database) in terms of its name, the name of the class used to represent the entity in your application, and what properties (attributes and relationships) it has. Creating an Entity and Its Properties When you start a new project in Xcode and open the template selection dialog, select the Use Core Data checkbox. A source file for the Core Data model is created as part of the template. That source file will have the extension .xcdatamodeld. Select that file in the navigator area to display the Core Data model editor. Entity Name and Class Name Note that the entity name and the class name (a subclass of NSManagedObject) are not the same. The entity structure in the data model does not need to match the class hierarchy. Figure 2-2 shows a class name with the recommended class name pattern of Objective-C, along with an MO suffix. An entity name and a class name are required. Abstract Entities Specify that an entity is abstract if you will not create any instances of that entity. You typically make an entity abstract if you have a number of entities that all represent specializations of (inherit from) a common entity that should not itself be instantiated. For example, in the Employee entity you could define Person as an abstract entity and specify that only concrete subentities (Employee and Customer) can be instantiated. By marking an entity as abstract in the Entity pane of the Data Model inspector, you are informing Core Data that it will never be instantiated directly.
Views: 3373 raywenderlich.com
Getting the error "The action can't be completed because the folder or a file in it is open in another program" in windows 10? Try these simple 4 methods and let's know if this works for you. First of all, please check if any file is open within the folder. 1- restart windows explorer from task manager I right click on windows task bar I task manager I Windows Explorer I click on restart at the bottom 2- delete temporary folder just type %temp% in windows search pane and open temporary folder to delete all files inside 3- Empty recycle bin: just right click on recycle bin and chose empty recycle bin 4- stop all running programs from the task manager as the last step Hope it works! Keep us updated with the status of the issue! Your feedbacks will help us to serve you better! If you are facing any problem with your windows devices and android devices, please let's know here https://www.youtube.com/c/iviewgle We'll try to fix your problem For more How-to videos subscribe to our channel! http://www.youtube.com/c/iviewgle?sub_confirmation=1 Please like our facebook page at https://www.facebook.com/iviewgle Thanks for watching us! For business queries contact us here https://www.youtube.com/channel/UCf-xomVnJJxdeUr7MYfUdag/about?
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