Beginning Windows 8 Data Development: Using C# and by Vinodh Kumar

By Vinodh Kumar

This e-book introduces amateur builders to more than a few info entry thoughts for storing and retreiving information either in the neighborhood and remotely. It provide you with a variety of totally operating info entry ideas and the perception you must comprehend while, and the way, to use all the ideas to top advantage.

Focussing particularly on how the home windows eight app developer can paintings with the home windows Runtime (often referred to as home windows RT) framework this booklet offers cautious research of the numerous thoughts you will have open to you, in addition to a comparision in their strengths and weaknesses lower than various stipulations. With the times of a unmarried database being definitely the right selection for the majority improvement initiatives long past. you are going to lean that the ideal selection to your app now will depend on quite a few elements and getting it correct might be severe in your customer's finish person experience.

We disguise a number of facts entry suggestions starting from storing and retrieving info in the community utilizing the JET API, to utilizing the most well-liked open and closed resource database items like SQLite and SQL Server. we glance at how light-weight HTML and JavaScript apps paintings good with both feather-weight information shops like IndexedDB. We'll additionally introduce you to extra complex info entry innovations like leisure (JSON), WCF RIA providers, ASP.NET MVC four net API and home windows Azure which could highly extend the horizons of what it's attainable in your app to do as garage - or even processing - are taken past the confines of your user's device.

By the time you might have learn this publication you'll be acquainted with the major information entry issues it is important to overview as you construct you apps and you'll be capable of with a bit of luck pick out the knowledge entry structure that's excellent to the app you must construct.

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Extra info for Beginning Windows 8 Data Development: Using C# and JavaScript

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Deleting the Movie Object The deleteMovie function deletes a row from the Movie objectStore. Just like saveMovie, we start a transaction, reference the object store that contains the Movie object, and issue a delete command with the unique ID of our object (see Listing 4-5). 44 CHAPTER 4 N LOCAL DATA ACCESS: I: INDEXEDDB Listing 4-5. ", "Log", "error"); }; } Retrieving Movie Details Movie details are retrieved either from the database that is part of the user’s collection or from the Rotten Tomatoes database using the REST API.

The following are some of the common IndexedDB contracts. u Database: A database consists of one or more object stores that hold the data stored in the database. It also contains indexes and is used to manage transactions. There can be multiple databases in an application. u Object store: An object store is the primary storage used for storing data in a database. It’s a collection of JavaScript objects where attributes have key–value pairs. 35 CHAPTER 4 N LOCAL DATA ACCESS: I: INDEXEDDB u Key: A key is used to uniquely identify an object within a database.

U Status: Current status of the movie like Available, Borrowed, Lent Out. js by calling a function createDB as shown in Listing 4-1. 40 CHAPTER 4 N LOCAL DATA ACCESS: I: INDEXEDDB Listing 4-1. terminated) { // TODO: This application has been newly launched. Initialize // your application here. } else { // TODO: This application has been reactivated from suspension. // Restore application state here. home); } })); //creating the indexeddb database createDB(); } }); The CreateDB function creates the request to open the databases.

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