TechSavvy

For a small personal database, one person defines, constructs and manipulates the database . For a large organization, many people are involved in the design, use and maintenance of the large database Two types of actors of DBMS: 1. Actors on the Scene (day-to-day use of large database ) 2. Workers behind the Scene ( work to maintain database environment and are not involved in its contents ) Actors on the Scene Database administrators (DBA) are responsible for:  Authorizing access to the database  Coordinating and monitoring its use  Acquiring software and hardware resources Database designers are responsible for:  Identifying the data to be stored  Choosing appropriate structures to represent and store this data . End users - People whose jobs require access to the database.  Types of End Users • Casual end users • Naive or p...

Advantages of D ata b ase As database is required in every field, so it has many advantages, Few of these advantages are as. Minimal Redundancy Privacy and Security Easy Searching Integrity Consistency Simplicity Full Control Data Migration Sharing Of Data In DBMS, Data can be shared in between authorized user of database. All the users have their own right to access the database up to a level. Database Administration has complete access of database. He can assign users to access the database. Others users are also authorized to access database and also they can share data between them. Many users have same authority to access the database. Data Consistency DBMS controls data redundancy which in turn controls data consistency. Data consistency means if you want to update data in any files then all the files should not be updated again. As in DBMS, data is stored in a single database so data becomes more ...

D ata :  A data is a piece of information or facts. A data can be in any form like numbers, texts, piece of paper, measurements and bytes . For example , Student name, age, class, roll no. image etc. A file, pdf and document can also be a data. A database is an organized collection of data . It is the collection of schemas , tables , queries , reports, views , and other objects. OR Database is a collection of related data and data is a collection of facts and figures that can be processed to produce information. K ey features of DATABASE . Database is always well ordered. Database is interlinked. It is stored only once. Easy retrieval of information Made up of fields, records and files For exampl e a phone book carrying thousand of numbers in it is the basic example of database. In phone book you can search any number without any problem because all the numbers are arranged in a systemic order. Other Examples are: Electric ...