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Learning SQLite for iOS

You're reading from   Learning SQLite for iOS Extend SQLite with mobile development skills to build great apps for iOS devices

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Product type Paperback
Published in Mar 2016
Publisher
ISBN-13 9781785288975
Length 154 pages
Edition 1st Edition
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Author (1):
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Gene Da Rocha Gene Da Rocha
Author Profile Icon Gene Da Rocha
Gene Da Rocha
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Table of Contents (10) Chapters Close

Preface 1. Introduction to SQL and SQLite FREE CHAPTER 2. Database Design Concepts 3. Administering the Database 4. Essentials of SQL 5. Exposing the C API 6. Using Swift with iOS and SQLite 7. iOS Development with PhoneGap and HTML5 8. More Features and Advances in SQLite Index

Viewing database schema data


SQLite offers several commands as part of a command set to get information about the contents of a database. For example, to get a list of tables, use the .table command. To find a specific table name, use a % symbol and text as a pattern to find the result, for example, .tables [pattern], as shown in the following screenshot. By issuing the .tables command and appending a %te% text to it, is a request to SQLite to list all its tables within the database that has the word te (in our case temp) in their name which are displayed correctly:

Index data

Prior to the following example, a temp_idx index has been created, to get a list of indexes for the temp table, at the sqlite3 prompt .indices temp, which is actually the .indices command followed by the table name, as shown here:

By using the preceding command, the temp table's index can be seen.

Schema data

To view the schema of the database, the following command can be issued, .schema, but type the .schema <table...

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