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Which database object does not physically exist? A view database object does not physically exist.
Describe the iterative and incremental life cycle For an iterative and incremental life cycle, two criteria are process and time. The main components of showing a project devel
pine vally company
What are the disadvantages of relational data ? Disadvantages • Performance - If the number of tables among that relationships to be established are large and the tables t
What are ways of finding out either an update is required or not for derived attributes? The ways to find out an update is required or, not are as: Explicit update
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
What are the function of DBA?
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
What is a PROJECT operation? The project operation is a unary operation that returns its argument relation with particular attributes left out. Projection is shown by pie (π).
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