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There are three main sources of utilities and applications for a DBMS: a. Vendor applications and utilities are given for working with or maintaining the database, and generally
The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Which is a legal expression in SQL? SELECT NAME FROM EMPLOYEE is a legal expression in SQL.
Which component is not included in database environment ? A users component is not included in database environment.
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL. T
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
assignment
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
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