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Mention the purpose of SID and SOD lines
SID (Serial input data line):
It is an input line by which the microprocessor accepts serial data.
SOD (Serial output data line):
It is an output line by which the microprocessor sends output serial data.
What are the advantages of object oriented databases in comparison with others? Why it is still not widely used? Object oriented designs are coherent, efficient and less prone
Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
what are information system hirarchy?
what is data link layer
explain ER Modeling?
What is DDL? Make a list of commands with short description used in DDL Ans: Data Definition Language that is abbreviated as DDL is a computer language for defining data struct
What are the disadvantages of relational approach? Disadvantages of relational approach: • Substantial hardware and system software overhead • May not fit all business models •
Define identify relationship? Identifying relationship: An identifying relationship means in which the child table cannot be uniquely recognize without the parent. For exampl
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
Explain the Cartesian product: The Cartesian product operation does not need relations to union-compatible. The meaning of this is that the involved relations may have dissim
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