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What are the three classes of SQL expression?
SQL expression consists of three clauses:
Select
From
Where
Table Handling In RDBMS more than one table can be tackled at a time by using join operation. Join operation is a relational operation that causes 2 tables with a common domai
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
Explain group By clause in SQL? Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results thro
(A) For the relation; CarSales (RegNo, BuyerName, Address, SalesPerson, Make, Model, Commission) The following functional dependences hold, RegNo _ID à Make, Model Reg
what is attribute is attribute inheritance in dbms?
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Table_Name( attribute_1, attribute_2, attribute_3, ….. ,attribute_x) Primary Key ( attribute_1, attribute_2) Foreign Key attribute_4 References Table_Name_2 (repeat for each fore
Database systems have many opposite efforts ?
For Colorado customers calculate the number of single products ordered. If a product is purchased on multiple orders, it should be counted only single time. The result should conta
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
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