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Database Concepts Unit 1

In: Computers and Technology

Submitted By MJB2014
Words 376
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1. A recent trend for major commercial database developers is to offer free “Express” versions of their databases. Microsoft has SQL Express, Oracle has Oracle Express, and DB2 has DB2 Express. Go to the company websites, and look up these Express editions. What features does each one have? What limits do they have? How do they compare to each other?

The features are:
SQL Server Express supports most of the features and functionality of SQL Server. The following table lists some of the major features and components that are supported.
Stored Procedures SQL Server Configuration Manager
Views Replication (as a subscriber only)
Triggers Advanced Query Optimizer
Cursors SMO/RMO sqlcmd and osql utilities Integration with Visual Studio 2005
Snapshot Isolation Levels Service Broker (as a client only)¹
Native XML support, including XQuery and XML Schemas SQL CLR
Transact-SQL language support Multiple Active Result Sets (MARS)
Dedicated Administrator Connection² Import/Export Wizard

The limits are:
The following table lists the additional SQL Server database features that are not supported in this version of SQL Server Express. It also lists database features from previous versions of SQL Server that are not supported.
SQL Server features not supported in SQL Server Express SQL Server features from previous versions not supported in SQL Server Express
Database mirroring SQL Mail
Online restore Fail-over clustering
Database snapshot Distributed partitioned views
Parallel index operations VIA protocol support
Mirrored media sets Log shipping
Partitioning Parallel DBCC
Address Windowing Extensions (AWE) Parallel Create Index
Hot-add memory Enhanced Read Ahead and Scan
Native HTTP SOAP access Indexed views (materialized views)
SQL Mail and Database Mail Partitioned views
Online Index Operations
SQL Server Agent and SQL Server Agent Service…...

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