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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.
Data independence seems that "the application is independent of the access strategy and storage structure of data". In other words, the ability to change the schema definition in o
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
define lock conversion
Describe Query evaluation engine? Query Evaluation engine: Vehicle executes low-level instructions obtained through the DML compiler. The Storage Manager Components gives in
What is abstraction? Abstraction in the object orientation is a idea that provide opportunity to express necessary properties of object without providing much details of the im
wh
What is 2NF? A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.
Which method is used to key transformation ? A hash method is used to key transformation.
What is an ERD?
Explain the concept of a data model ? Data Model - Model is an abstraction procedure which hides irrelevant details although highlighting details relevant to the application
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