Q.07: Define program file?
Ans: A type of field that contains
software instructions is called program file. The source program files and
executable files are examples of program files.
Q.08:
Define data file?
Ans: A file that contains data is called
data file. It is created by the software being used.
Q.09:
Explain sequential files?
Ans: The records in sequential file
organization are stored in sequence. The sequence means the records are stored
one after the other. The records can be retrieved only in the sequence in which
they were stored. The principal storage media for sequential files is magnetic
tape.
Q.10:
Describe indexed sequential files?
Ans: In indexed sequential file
organization, records are stored in ascending or descending order based on a
value called key. The index file organization maintains an index in a file.
Q.11:
Define database?
Ans: A database is a collection of
logically related data sets or files. Each file may contain different type of
information and are used for specific purpose. The files may be organized in
different ways to meet different processing and retrieval requirements of the
users.
Q.12:
Explain database system?
Ans: A database system is a collection of
data as well as programs required to manage that data. A database system is a
computerized record-keeping system. The main purpose of this system is to
maintain data and provide it to user when it is required.
Q.13:
Define database integrity?
0 Comments