Download e-book for iPad: Android SQLite Essentials by Sunny Kumar Aditya

By Sunny Kumar Aditya

ISBN-10: 1783282959

ISBN-13: 9781783282951

Develop Android functions with some of the most commonplace database engines, SQLite

About This Book

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

Who This ebook Is For

This is a perfect publication for Android programmers who are looking to discover SQLite databases in accordance with Android purposes. the final competency point anticipated of the reader is past 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 information over and over. the driver in the back of the platform is the database, permitting a myriad of decisions for builders making state-of-the-art applications.

Android SQLite necessities makes a speciality of the center options in the back of construction database-driven purposes. This booklet covers the fundamental and complicated themes with similar simplicity and element, to be able to permit readers to quick take hold of and enforce the ideas to construct an program database.

This booklet takes a hands-on, example-based method of aid readers comprehend the middle subject matters of SQLite and Android database-driven purposes. This ebook makes a speciality of supplying you with latent in addition to common wisdom approximately practices and methods in the direction of improvement in an simply comprehensible manner.

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Extra resources for Android SQLite Essentials

Sample text

The SQLite syntax SQLite follows a unique set of rules and guidelines called syntax. Hence, the SQL statements that we use for static systems can be used seamlessly here. 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.

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. html. Then we will use the raw query to fetch data back from the table. insert(TABLE_CONTACTS, null, cv); } ... d("DATABASE", "count is : " + count); } } ... delete(TABLE_CONTACTS, whereClause, whereArgs); } ... put("COL_1", 1);, the column is COL_1 and the value being inserted for that column is 1.

SQLite itself does not validate if the types written to the columns are actually of the defined type, for example, you can write an integer into a string column and vice versa. The catch is, it won’t contain the familiar TRUE/FALSE values. The file is present in the internal storage of an application, and access to it can be public or private as needed. A general example would be saving the last read position in a PDF, or saving a user’s preference to show a rating box. Internal storage, by default, is limited and accessible only to the application, whereas the external storage may or may not be available in case it is mounted.

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Android SQLite Essentials by Sunny Kumar Aditya


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