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What are the types of storage devices?
Primary storage
Secondary storage
Tertiary storage
Volatile storage
Nonvolatile storage
Consider the relation schemas as follows. works (person name, company name, salary); lives (person name, street, city); located in(company name, city); managers (person name
Which is a legal expression in SQL? SELECT NAME FROM EMPLOYEE is a legal expression in SQL.
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
WHAT IS MEANT BY E-R MODEL
Explain the Check Clause The CHECK clause is employed to at the end of a CREATE TABLE statement specify table constraints. This is known as table-based constraint because it ap
How does the two phase protocol ensure serializability in database schedules? Ans: A transaction is termed to follow the two-phase locking protocol if all locking operations
The Internal or Physical Level The collection of files permanently stored on secondary storage devices is called as the physical database. The internal or physical level is t
Scenario 1: Power goes out after the first instruction. What happens?
By using the delete operation some consisting records can be deleted from a relation. To delete some definite records from the database a condition is also specified based on which
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
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