Definition of Database A database is a collection of related
information that is organized so that it can easily be accessed,
managed, and updated.DBA?
Definition of DBMS The Database Management System, or DBMS, is a
computer software program that is designed as the means of managing
all databases that are currently installed on a system hard drive
or network.
Definition of RDBMS RDBMS also provides what DBMS provides but
above that it provides relationship integrity. So in short we can
sayRDBMS = DBMS + REFERENTIAL INTEGRITY
Meaning of SQLSQL stands for Structured Query Language SQL lets
you access and manipulate databases SQL is an ANSI (American
National Standards Institute) standard What Can SQL do?SQL can
execute queries against a database SQL can retrieve data from a
database SQL can insert records in a database SQL can update
records in a database SQL can delete records from a database SQL
can create new databases SQL can create new tables in a database
SQL can create stored procedures in a database SQL can create views
in a database SQL can set permissions on tables, procedures, and
views
DMLDML is abbreviation of Data Manipulation Language. It is used
to retrieve, store, modify, delete, insert and update data in
database.Examples: SELECT, UPDATE, INSERT statementsDDLDDL is
abbreviation of Data Definition Language. It is used to create and
modify the structure of database objects in database.Examples:
CREATE, ALTER, DROP statementsDCLDCL is abbreviation of Data
Control Language. It is used to create roles, permissions, and
referential integrity as well it is used to control access to
database by securing it.Examples: GRANT, REVOKE statementsTCLTCL is
abbreviation of Transactional Control Language. It is used to
manage different transactions occurring within a database.Examples:
COMMIT, ROLLBACK statements
The History of SQL ServerMicrosoft initially developed SQL
Server (a database product that understands the SQL language) with
Sybase Corporation for use on the IBM OS/2 platform. Oh what a
tangled web we weave! When Microsoft and IBM split, Microsoft
abandoned OS/2 in favor of its new network operating system,
Windows NT Advanced Server. At that point, Microsoft decided to
further develop the SQL Server engine for Windows NT by itself. The
resulting product was Microsoft SQL Server 4.2, which was updated
to 4.21. After Microsoft and Sybase parted ways, Sybase further
developed its database engine to run on Windows NT (Sybase System
10 and now System 11), and Microsoft developed SQL Server 6.0then
SQL Server 6.5, which also ran on top of Windows NT. SQL Server 7.0
now runs on Windows NT as well as on Windows 95 and Windows 98.
SQL Server builds
VersionYearRelease Name1.0 ()1989 SQL Server 1.0 4.21() 1993 SQL
Server 4.21 6.0 1995 SQL Server 6.0 6.51996 SQL Server 6.5 7.0 1998
SQL Server 7.0 - 1999 SQLServer 7.0 Tools 8.02000SQL Server 2000
8.02000SQL Server 2000 64-bit Edition9.02005SQL Server 2005
10.02008SQL Server 2008
SQL Server buildsAll the service packs are cumulative, meaning
that each new service pack contains all the fixes that are included
with previous service packs and any new fixes
