Prepared By::-Ghanshyam Patel

Defination

A database is a collection of information that is

organized so that it can easily be accessed,

managed, and updated.

A Program that provides access to databases is

known as a database management system(DBMS).

For the use of DBMS data redundancy, data isolation

and data inconsistency are minimized and data can

be shared among users of data.

Types Of Databases:

There are basic two types of databases:-

Centralized Databases

Distributed Databases

Centralized Databases

where the database is physically in one location and

users typically use an Internet connection to access

it.

Banks tend to use centralized databases.

Distributed Databases

Where the database is in many locations often

where you have a national or international company

and customers tend to regularly interact with a local

branch.

For example: Google uses Big-Table a distributed

DBMS as searching tends to be by users in a

particular region of the world.

Information About DBMS

The DBMS permits an organization to centralize

data, manage them efficiently and provide access to

the stored data by application program.

The DBMS acts as an interface between application

programs and physical data files. And also it

provides user with tools to add, delete, maintain,

display, print, search, select, short and update data.

Function Perform by DBMS

Data Filtering and profiling

Data quality

Data Synchronization

Data Enrichment

Data maintenance

Advantages and capabilities of a DBMS

Permanence

Querying

Concurrency

Back up and replication

Rule Enforcement

Security

Computation

Change and access logging

Automated optimization

View of the Data provide by DBMS

A DBMS provides two views of data: A Physical

View and A logical View

The physical view deals with the actual, physical

arrangement and location of data in the direct

access storage devices(DASDs).

The logical view/user’s view, of a database program

represents data in a format that is meaningful to a

user and to the software programs that process

those data.

Thank You