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define normalisation and functional dependency
What is the difference between WHERE and HAVING clauses?. Predicates in the WHERE clause applies to every tuple while the predicate in the HAVING clause applies to groups.
State about the Use Case Diagram A use case diagram represents a set of use cases, actors and their relationships. These diagrams shall be used to model context or requirement
In Database software have only pure security or some dis secured by administrator?
Q. Describe how an ER schema can be represented by relation schemas and constraints arising from ER design can be mapped to constraints on a relation schema. The entity rela
a) Suppose we updated the catalog tables in real time, that is, after every update, insert, or delete SQL statement were executed-rather than only running RUNSTATS once every few
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
intent locking
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