SQLite数据库连接方式
SQLite.NET
Type: .NET Framework Class Library
Usage: System.Data.SQLite.SQLiteConnection
Basic
Data Source=filename;Version=3;
Version 2 is not supported by this class library.
Using UTF16
Data Source=filename;Version=3;UseUTF16Encoding=True;
With password
Data Source=filename;Version=3;Password=myPassword;
Using the pre 3.3x database format
Data Source=filename;Version=3;Legacy Format=True;
With connection pooling
Connection pooling is not enabled by default. Use the following parameters to control the connection pooling mechanism.
Data Source=filename;Version=3;Pooling=False;Max Pool Size=100;
Read only connection
Data Source=filename;Version=3;Read Only=True;
Using DateTime.Ticks as datetime format
Data Source=filename;Version=3;DateTimeFormat=Ticks;
The default value is ISO8601 which activates the use of the ISO8601 datetime format
Store GUID as text
Normally, GUIDs are stored in a binary format. Use this connection string to store GUIDs as text.
Data Source=filename;Version=3;BinaryGUID=False;
Note that storing GUIDs as text uses more space in the database.
Specify cache size
Data Source=filename;Version=3;Cache Size=2000;
The Cache Size value measured in bytes
Specify page size
Data Source=filename;Version=3;Page Size=1024;
The Page Size value measured in bytes
Disable enlistment in distributed transactions
Data Source=filename;Version=3;Enlist=N;
Disable enlistment in distributed transactions
Data Source=filename;Version=3;Enlist=N;
Disable create database behaviour
If the database file doesn’t exist, the default behaviour is to create a new file. Use the following parameter to raise an error instead of creating a new database file.
Data Source=filename;Version=3;FailIfMissing=True;
Limit the size of database
Data Source=filename;Version=3;Max Page Count=5000;
The Max Page Count is measured in pages. This parameter limits the maximum number of pages of the database.
Disable the Journal File
This one disables the rollback journal entirely.
Data Source=filename;Version=3;Journal Mode=Off;
Persist the Journal File
This one blanks and leaves the journal file on disk after a commit. Default behaviour is to delete the Journal File after each commit.
Data Source=filename;Version=3;Journal Mode=Persist;
Controling file flushing
Data Source=filename;Version=3;Synchronous=Full;
Full specifies a full flush to take action after each write. Normal is the default value. Off means that the underlying OS flushes I/O’s.
2.Finisar.SQLite ADO.NET Data Provider
Standard
Data Source=mydb.db;Version=3;
The “Version” key can take value “2” for SQLite 2.x (default) or value “3” for SQLite 3.x
Create a new database
Data Source=mydb.db;Version=3;New=True;
Using compression
Data Source=mydb.db;Version=3;Compress=True;
Specifying Cache Size
The Cache Size value represents the amount of data pages that are held in memory. Try increase this value for speed improvements but don’t forget to keep track of the applications memory usage.
Data Source=mydb.db;Version=3;Cache Size=3000;
3.SQLite3 ODBC Driver
Standard
DRIVER=SQLite3 ODBC Driver;Database=mydb.db;LongNames=0;Timeout=1000;NoTXN=0;SyncPragma=NORMAL;StepAPI=0;
.NET Framework Data Provider for ODBC
Bridging to SQLite3 ODBC Driver
This is just one connection string sample for the wrapping OdbcConnection class that calls the underlying ODBC Driver. See respective ODBC driver for more connection strings to use with this class.
DRIVER=SQLite3 ODBC Driver;Database=mydb.db;LongNames=0;Timeout=1000;NoTXN=0;SyncPragma=NORMAL;StepAPI=0;
