SQLite and the.NET Framework This PPT:

What is SQLite? SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.  Transactions are atomic, consistent, isolated, and durable (ACID) even after system crashes and power failures.  Zero-configuration - no setup or administration needed.  Implements most of SQL92.  A complete database is stored in a single disk file.  Database files can be freely shared between machines with different byte orders.  Supports databases up to 2 terabytes (241 bytes) in size.  Sizes of strings and BLOBs limited only by available memory.

What is SQLite – continued  Faster than popular client/server database engines for most common operations.  Simple, easy to use API.  Bindings for many languages available  Well-commented source code with over 95% test coverage.  Self-contained: no external dependencies.  Sources are in the public domain. Use for any purpose.  There is now a robust SQLite.NET ADO.NET provider!  Small code footprint: less than 30K lines of C code, less than 250KB code space  Installation: Just set “Build Action” to “Content” on Database file!

More SQLite Features Create Database Programmatically in Connection string  No need to distribute or install database  SQL to create database, tables, triggers can be embedded Triggers  Triggers can be used to handle many of the functions of stored procedures. Vacuum  Just like “Compact Database” in MS Access.

The SQLite ADO.NET Provider Conforms to normal ADO.NET Best practices Offers:  SQLiteConnection  SQLiteCommand - all Methods except “Xml”  SQLiteDataAdapter  SQLiteCommandBuilder  Supports NTFS compression of Database File

SQLite 3.0 ODBC Driver This is an experimental open source ODBC driver for the wonderful SQLite 2.8.* and SQLite 3.* (alpha) Database Engine/Library. So far it is more a proof of concept and might contain lots of memory leaks and all other kinds of bugs. Thus I highly appreciate feedback. WIN32 binaries (the ODBC driver DLL, install/uninstall programs) are in werner.de/sqliteodbc/sqliteodbc-win32.zip It works! It is SLOOOOW!

SQLite in Action: A First Look private void CreateDatabase() { SQLiteConnection Conn = new SQLiteConnection(); string strPath=Server.MapPath("blog.db"); Conn.ConnectionString = "Data Source="+strPath+"; Compress=False;Synchronous=Off;New=True;Version=3"; Conn.Open(); SQLiteCommand Cmd = new SQLiteCommand(); Cmd = Conn.CreateCommand(); Cmd.CommandText="CREATE TABLE BlogItems (Blogid integer primary key, title varchar(250), link varchar(300), [description] varchar(8000), pubDate datetime, guid varchar(128), [public] integer )"; Cmd.ExecuteNonQuery();....

Important Scenarios Mobile Code  Device-hosted applications  Database runs 100% on Device  “Zero configuration” installation  NO Client License Fees Server / Desktop Code  Alternative to MSDE, MSAccess, MySql  No installation Required  Fast database engine  MultiThreaded

Mobile Code Scenario Advantages of mobile code database  Executes locally for performance and rich features  Can use a WebService to receive “GetChanges” DataSets to update database on server  No dependency on “what kind” of database is used on the server.  No complicated Server configuration  No Client license fees to use SQLite

Demos!

URLS - Articles and Sample Code! ASP.NET CacheDependency: ASP.NET CacheDependency: SQLite DB and SQLiteBlog: SQLite DB and SQLiteBlog: Forum Control with SQLite: Forum Control with SQLite: SQLite Compact Framework: SQLite Compact Framework: