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Define an abstraction by which relationships are treated as higher level entities
Ans: Aggregation.
It is an abstraction by which relationships are treated as higher level entities Aggregation. (In ER diagram, aggregation is utilized to denote a relationship as an entity set.)
Ancestry database records information about family trees . Following information is recorded about each person: FIRSTNAME first name SURNAME surname MNAME maiden name (if
Normalize the given relation to 3NF, justifying each step
Your friend owns a computer store in Yuen Long, selling Desktop and Notebook PCs and other computer peripherals. Having been rather successful with his business there, he decided t
What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value out
Explain in details about the f unctions of DBA ?
Which model is record based logical model? Network Modelis basically known as record based logical model.
write program
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
The basic merits of decomposition. The Advantages of Decomposition 1. Separate person can work on each subsystem. 2. A particular software engineer can specialize in a
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