Interview Questions - DBMS Basics
65.
What are the primitive operations common to all record management systems?
Addition, deletion and modification.
66.
Name the buffer in which all the commands that are typed in are stored?
'Edit' Buffer.
67.
What are the unary operations in Relational Algebra?
PROJECTION and SELECTION.
68.
Are the resulting relations of PRODUCT and JOIN operation the same?
No.
PRODUCT: Concatenation of every row in one relation with every row in another.
JOIN: Concatenation of rows from one relation and related rows from another.
PRODUCT: Concatenation of every row in one relation with every row in another.
JOIN: Concatenation of rows from one relation and related rows from another.
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