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What is a super key?
A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
Guidelines for creation of table: Table name should begin with an alphabet. In table name, single quotes and blank spaces are not allowed. Reserve words of that DBM
What are the advantages of by using an index and what are its disadvantages ? In difference, if the search key of a secondary index is not a candidate key, it is not sufficient
Define instance and schema? Instance: Collection of data kept in the data base at a particular moment is known as an Instance of the database. Schema: The o
(a) Why did SAP introduce the extended star schema?
explain participation constraints with examples
deffine class&object
how to implement hyrise in C plus plus
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
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