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What is a trigger
why are older data models are being replaced by new data models
Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
What is called a query -execution engine? The query implementation engine takes a query evaluation plan, implements that plan, and returns the answers to the query.
Homework chapter 10 no 3
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
How can Redundant Associations be done It can be done by asking questions: i) Is there a specific arrangement of network which would optimize critical aspects of completed
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