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What is transaction?
Collections of operations that form a single logical unit of work are known as transactions.
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
Explain DML with some examples? DML - Data Manipulation Language: statements used for managing data within schema objects. Some examples: • SELECT - retrieve data from the a da
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
Why is database redesign necessary? Database redesign is essential for two reasons. First, redesign is essential both to fix mistakes made during the initial database design. S
You group has been hired by TrainingrUs.com to keeps track of training revenues. TrainingrUS.com wants you to keep scheduling. COURSE table contains following information:
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
About Attribute inheritance
Which sorting technique is used to sort databases, whose sizes are very big? Give one such algorithm. Why do sorting techniques like quicksort, insertion sort, etc. not applied
what is 3nf
Views in relational algebra: 1. Basic expression contains either a) A relation in the database. b) A constant relation. 2. General expressions are madde out of sma
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