Thursday 2 February 2012


1.what is meant by a Database?
a)Collection of interrelated data or tables is as database.
2.what is the use of Database?
a) It is used to store the data in the table form.
3.what is meant by a table?
a)collection of records or a 
table is a set of data elements (values) that is organized using a model of vertical columns(which are identified by their name) and horizontal rows. A table has a specified number of columns, but can have any number of rows. Each row is identified by the values appearing in a particular column subset which has been identified as a candidate key.  
                                                    (or)

      A single store of related information. A table consists of records, and each record is made up of a number of fields. Just to totally confuse things, tables are sometimes called relations. You can think of the phone book as a table: It contains a record for each telephone subscriber, and each subscriber's details are contained in three fields - name, address and telephone.


4.What is meant by a record?
a)Collection of
 related fields. or A record contains all the information about a single 'member' of a table. In a students table, each student's details (name, date of birth, contact details, and so on) will be contained in its own record. Records are also known as tuples in technical relational database.
5)What is meant by field?
a) a Fields describe a single aspect of each member of a table. A student record, for instance, might contain a last name field, a first name field, a date of birth field and so on. 
6)what is data?
a)collection of raw facts.

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