Using SQLite: Small. Fast. Reliable. Choose Any Three. by Jay A. Kreibich

By Jay A. Kreibich

You could construct database-backed purposes for the computing device, internet, embedded platforms, or working structures with out linking to heavy-duty client-server databases similar to Oracle and MySQL. This e-book indicates you ways to exploit SQLite, a small and light-weight relational database engine for you to construct at once into your program. With SQLite, you will discover tips on how to enhance a database-backed program that continues to be practicable in measurement and complexity. utilizing SQLite courses you each step of ways.

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Using SQLite: Small. Fast. Reliable. Choose Any Three.

You could construct database-backed functions for the machine, net, embedded platforms, or working structures with no linking to heavy-duty client-server databases resembling Oracle and MySQL. This e-book indicates you the way to take advantage of SQLite, a small and light-weight relational database engine for you to construct without delay into your software.

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Declarative languages tend to be simpler (especially for nonprogrammers) to understand. Once you get used to the general structure of the commands, the use of English keywords can make the syntax easier to remember. The fixed command structure also makes it much easier for the database engine to optimize queries and return data more efficiently. The predefined nature of declarative statements can sometimes feel a bit limited, however—especially in a command-based language like SQL, where individual, isolated commands are constructed and issued one at a time.

Like most languages, SQL has a fairly complete expression syntax that can be used to define command parameters. A more detailed description of the expression support can be found in Appendix D. Basic Syntax SQL consists of a number of different commands, such as CREATE TABLE or INSERT. These commands are issued and processed one at a time. Each command implements a different action or feature of the database system. Although it is customary to use all capital letters for SQL commands and keywords, SQL is a case-insensitive* language.

Info The concurrency protection offered by SQLite depends on file locks to protect against data loss. This model allows multiple database connections to access a database at the same time, but the whole database file must be locked in an exclusive mode to make any changes. As a result, write transactions are serialized across all database connections, limiting the overall transaction rate. Depending on the size and complexity of your updates, SQLite might be able to handle a few hundred transactions per minute from different processes or threads.

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