Mysql Introduction
Mysql Introduction :
1. Database
is the place where data is stored.
2. Databases
are the prefered method of storage of data for large multi user applications.
3. A
database management system(DBMS) is a system, usually automated and
computarized, user to manage any collection of compatible and ideally
normalized data.
4. The
DBMS manages storage and access to the data and provides a query language to
specify actions associated with the data. The standard query language is
SQL(Structures Query Language).
Relational Databases:
1. RBDMS
splits the data into a series of tables, limited by key elements that are
common between tables.
2. It
provides storage efficiency because data do not need to be duplicated between
records.
a. Information
is stored in tables.
b. Tables
stores information about entities.
c. Entities
hava characterstics called attributes.
d. Each
row in a table represents a simple entity.
e. Each
row is a set of attribute values.
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