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statical data
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
Submit the SQL Statements necessary to create your database according to the following guidelines: Your SQL statements should exactly mirror your ERD. All primary keys,
Which method of access uses key transformation? A Hash method of access uses key transformation.
brief history,definition,current trends and future trends if any of data fragmentation
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
Eliminate Columns Not Dependent On Key The Employee Relation satisfies - First normal form - As it has no repeating groups. Second normal form - As it do not have multi-a
define lock conversion
i want notes on this topic
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