SQLiteSQLite

Cole HoosierCole Hoosierhoozh@ksu.eduhoozh@ksu.edu

OverviewOverview

RDBMSRDBMS– Relational database management Relational database management

systemsystem ACID CompliantACID Compliant

– Atomicity, consistency, isolation, Atomicity, consistency, isolation, durabilitydurability

C LibraryC Library Public DomainPublic Domain

The GoodThe Good

FastFast Zero configurationZero configuration Variable-length recordsVariable-length records Each DB stored in single fileEach DB stored in single file Libraries are small ( <250KB )Libraries are small ( <250KB ) Supports 5 common operating Supports 5 common operating

systemssystems

The BadThe Bad

No type-checkingNo type-checking– A feature?A feature?

Only one process can obtain write Only one process can obtain write access at a timeaccess at a time

Higher overhead to initialize a Higher overhead to initialize a transactiontransaction

The UglyThe Ugly

Not SQL-92 CompleteNot SQL-92 Complete– 33rdrd revision of the SQL standard revision of the SQL standard

No “foreign key” constraintsNo “foreign key” constraints No “check” constraintsNo “check” constraints No “grant”/”revoke” access No “grant”/”revoke” access

permissionspermissions

Supported LanguagesSupported Languages C/C++/Objective-CC/C++/Objective-C JavaJava .NET.NET LispLisp OCamlOCaml PerlPerl PHPPHP Python **Python ** RubyRuby Visual BasicVisual Basic ODBC DriverODBC Driver Many more….Many more….

Appropriate UsesAppropriate Uses

WebsitesWebsites Embedded DevicesEmbedded Devices Application File FormatApplication File Format Testing and Demo WorkTesting and Demo Work ClassworkClasswork

Non-Appropriate UsesNon-Appropriate Uses

Client/Server AppsClient/Server Apps Very High-Volume WebsitesVery High-Volume Websites High concurrencyHigh concurrency

Example (1)Example (1)

Example (2)Example (2)

Example (3)Example (3)

Example (4)Example (4)

Example (5)Example (5)

ReferencesReferences

http://www.sqlite.org/http://www.sqlite.org/ http://en.wikipedia.org/wiki/SQLitehttp://en.wikipedia.org/wiki/SQLite http://en.wikipedia.org/wiki/ACIDhttp://en.wikipedia.org/wiki/ACID http://en.wikipedia.org/wiki/http://en.wikipedia.org/wiki/

Comparison_of_relational_database_Comparison_of_relational_database_management_systemsmanagement_systems

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