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What is a SELECT operation?
The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
What are the kinds of Strings? -A binary string in MySQL is one that MySQL treats as case sensitive in comparisons. -A non binary string in MySQL is one that MySQL does'nt
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
Question: This question refers to the database schema. a) Express the following queries in SQL: (i) Write the SQL code that will create the table Company. Your answer sh
WHAT IS DSS? WRITE ITS REQUIREMENTS.
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
Lossless-Join Decomposition Let us show an intuitive decomposition of a relation. We require a better basis for deciding decompositions since intuition may not always be r
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