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Explain the rules for creating a labelled precedence graph for testing view serializability.
Ans: A schedule S is view serializable if it is view equivalent to a serial schedule
Testing for Serializability
Some disadvantages of File Oriented System ?
sql is relationally complete-justify
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
Control Files : The redo and control files logs support the rest of the architecture. Every database must have at least one control file, although you have more than one to guard
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
Explain hash file organization? Hash functions a) The distribution is uniform Hash functions assign each bucket the similar number of search -key values from the set of a
how to prepare a data dictionary for online examination system for certified courses?
What are the requirements to ensure the objectives of file management principle is realized?
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
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