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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
What do you mean by atomicity and aggregation? Atomicity : Either all actions are carried out or none are. Users should not have to worry about the effect of incomplete trans
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
#questiononsider the following relation: CAR_SALE =(CAR_ID,oPTION_TYPE, Option_listpreice, Sale_date, Option_discountedprice)..
why are older data base model are being replaced by new data model
Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a
I have a homework assignment due today by midnight. I need help understanding databasse normalization and determining the type of form violation & how to fix the violation.
3 assignments combined in 1
When is UPDATE_STATISTICS command used? - When processing of large data is done, this command is used. - Whenever large number of modification, deletions or copy takes place
what is Nested relational model? Explain with examples.
Normalize the given relation to 3NF, justifying each step
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