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What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
What are the advantages of embedded query language? Give an example of an embedded SQL query. Embedded query language - SQL could be implemented within two ways. It can be us
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
Write the motivations led to development of OO-DBMS? 1. Programmer frustration with RDBMSs. 2. Requirement for special features.
Prove that a relation which is 4NF must be BCNF. Ans Let R be in 4NF. Suppose it is not in BCNF. Hence, there exists an FD X→Y in R such that x is not a super key. Although
write on the various type of relationalkey
Discuss The difference between drop table R and delete from R. DROP TABLE command deletes all the records with the table definition. This command will automatically committed
What is the meaning of Data Independence ?
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
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