sqlite multiple connections

From: http://blog.csdn.net/LocalVar/archive/2008/02/13/3620555.aspx  1. Introduction An important feature of a database that supports transactions like SQLITE is "Atomic commit ". Atomic commit means that all modification actions in a transaction

SQLite uses dynamic memory allocations to obtain the memory needed for various objects, such as database connections and SQL preprocessing statements, to establish the memory cache for database files, and to save query results. We've done a lot of

1.0 Introduction The task of the Query planner is to find the best algorithm or to say "query plan" to complete an SQL statement. As early as SQLite version 3.8.0, the component of the query planner has been rewritten so that it can run faster and

1) how to create an auto-increment field? A simple answer: a field declared as integer primary key will be automatically added. Here is a detailed answer: Starting from SQLite 2.3.4, if you declare a field in a table as integer primaryKey, so no

1. Asynchronous I/O modeTypically, when SQLite writes a database file, it waits until the write operation is complete and then controls the return to the calling program. Writing a file system is very time-consuming compared to CPU operation, which

1 as queries become larger and more complex, query time dwarfs network invocation or transaction overhead. 2 At this point some large design complex databases are starting to work. 3 Although SQLite can handle complex queries, it does not have a

I took notes after reading instructor Xiao Bu's "SQLite Quick Start video tutorial ".   Lecture 1 What is SQLite?Why?How to get it? How to install?How to manage it?How to Use Perl to access SQLite data;How to use C or C ++;SQL features not

Original: SQLite's transaction and lock http://3y.uu456.com/bp-877d38906bec097sf46se240-1.htmlTransactionA transaction defines the bounds of a set of SQL commands that are either fully executed as a whole or are not executed. A typical instance of a

Transactions A transaction defines the boundary of a group of SQL commands. This group of commands can be fully or not executed as a whole. A typical transaction instance is transfer. Transaction Scope Transactions are controlled by three commands:

English addressArticle reference Brief introductionAn important feature of a database system that supports transactions, such as SQLite, is atomic commit ( atomic commit ). That is, the write to the database in one transaction is either all