Download Android SQLite Essentials by Sunny Kumar Aditya PDF

By Sunny Kumar Aditya

Develop Android functions with the most popular database engines, SQLite

About This Book

  • Develop database-driven Android purposes and remain prior to the curve
  • Explore the easiest concepts to take advantage of cursors and loaders to accomplish optimal results
  • A step by step method of use SQLite for construction Android applications

Who This e-book Is For

This is a perfect booklet for Android programmers who are looking to discover SQLite databases in line with Android functions. the overall competency point anticipated of the reader is earlier wisdom of constructing purposes and uncomplicated wisdom of Android and SQL.

In Detail

SQLite is an open resource relational database administration procedure. Android makes use of the SQLite database to shop and retrieve facts again and again. the motive force at the back of the platform is the database, allowing a myriad of selections for builders making state-of-the-art applications.

Android SQLite necessities specializes in the middle techniques in the back of construction database-driven purposes. This ebook covers the elemental and complicated issues with an identical simplicity and aspect, with the intention to let readers to quick seize and enforce the strategies to construct an software database.

This ebook takes a hands-on, example-based method of support readers comprehend the middle subject matters of SQLite and Android database-driven functions. This e-book specializes in supplying you with latent in addition to common wisdom approximately practices and ways in the direction of improvement in an simply comprehensible manner.

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Additional resources for Android SQLite Essentials

Example text

By default, the database version is 1, and as we increment the database version numbers and release new versions, the upgrade will be performed. A simple example illustrating the use of the SQLiteOpenHelper class is present in the code bundle for this chapter; we would be using it for explanation: class SQLiteHelperClass { ... d("TAG", "Database opened"); } }; ... getWritableDatabase(); ... com/support and register to have the files e-mailed directly to you. SQLiteDatabase is the base class required to work with an SQLite database in Android and provides methods to open, query, update, and close the database.

Internally, SQLite stores data in five storage classes that can also be referred to as primitive datatypes: NULL: This represents a missing value from the database. At the time of processing in the memory, they are converted to the most general 8-byte signed integer form. REAL: This is a floating point value, and SQLite uses this as an 8-byte IEEE floating point number to store such values. This value is a text string. BLOB: This type stores a large array of binary data, exactly how it was provided as input.

Html. html. html With these things in place, we can now start our foray into SQLite. In this chapter, we will cover the following: Why SQLite? The SQLite architecture A quick review of database fundamentals SQLite in Android Why SQLite? Apple uses it in the iPhone and Google in the Android operating system. In short, this is a true DBA-less database. Even the contributors are asked to sign an affidavit to protect from any copyrights warfare that may occur in future. In the following chapters, we will be pulling out a database from an Android emulator to Windows.

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