Download - Data Base Management ! Batra Computer Centre
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Ph. No.: 8222066670, 4000670 Website: www.batracomputercentre.com
ISO Certified 9001:2008
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Data is a vital part of any organization. It need to be stored, organized, managed, accessed, protected and manipulated.
Operational Use databases to :
* Create a book* Track book sales* Set salaries or wages* Pay employees
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The purpose of database is to keep track of things
Unlike a list or spreadsheets, a database may store
information that is more complicated than a simple list
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The data Approach : Foundational Concepts
DBMS – Database Management System
Use a DBMS software to create, store, organize and retrieve data
from a single database or several database
Example : Microsoft Access
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Advantages of the Database Approach
Program-data independence Minimal data redundancy Improved data consistency Improved data sharing Increased productivity of application development Enforcement of standards Improved data quality Improved data accessibility Reduced program maintenance
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Effective Management of Databases
The Database administers (DBA)
Work with programmers and analysts to design and implement the database
Work with user and managers to establish database policies
Implement security features and establishes database permissions
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Ph. No.: 8222066670, 4000670 Website: www.batracomputercentre.com
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A user of a database system will
Use a database application to track things
Use forms to enter, read, delete and query data
Produce reports
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A set of one or more computer programs the serves an
intermediary between the users and the DBMS
Application program that read to modify database data by
sending SQL statement to DBMS
Application program to present data to users in the format
of forms and reports
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Create and process forms
Process user queries
Create and Process reports
Execute application logic
Control database applications
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A computer program used to create, process and administer
the database
DBMS receives request encoded in SQL and translate the
requests into actions on the database
DBMS is a large, complicated program that is licensed
software. Almost majority of the companies never write
their own DBMS program
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The database is a collection of related tables and other
structures
A database is a self-describing collection of related records
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Create database Create tables Create supporting structures Read database data Modify database data (insert, update, delete) Maintain database structures Enforce rules Control concurrency Provide security Perform backup and recovery
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Support several users simultaneously Include more than one application Involve multiple computers Are complex in design Have many tables Have many database
Organizational database systems typically:
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Ph. No.: 8222066670, 4000670 Website: www.batracomputercentre.com
Address :
SCO -15, Dayal Bagh,Near Hanuman Mandir
Ambala Cantt-133001Haryana
Ph. No.: 9729666670, 8222066670 &0171-4000670Email ID: [email protected]: www.batracomputercentre.com
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