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Where does view definition stored?
A view definition is permanently stored as part of the database.
What are the benefits of decomposing a system? The benefits of decomposing a system into subsystems are that after decomposition, each individual component become smaller and e
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
what is data link layer
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
Three way to handle missing field val
Define Assertions in SQL a. An assertion is a predicate that is expressing a condition we wish the database to always satisfy. b. Domain constraints, functional dependency
What is a Phantom Deadlock? In distributed deadlock detection, the delay in propagating local information might cause the deadlock detection algorithms to recognize deadlocks
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an ex
Consider the following relational database: STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course#, sem
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