What are the functions of database management system?

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What do you understand by ‘atomicity’ and ‘aggregation’?

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What is a php database?

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1.If we have a Salary coloumn in Staff entity with this description the salary must be monetary and >=$35450.00, how we can write it in into schemain SQL? 2. If we have Weight and Marks in Assessment entity and the Weight has the description of this it must be Non-zero percentage. And also the Marks attribute stores the maximum possible raw mark for assessment (e.g., 30), while Weight stores of the weight of this assessment for the paper as a whole (e.g., 10%). If Marks is not specified, then Weight is used for both. How we can convert this into schema in SQL????

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what are the differences between network and hierarchical database model?

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what Kind of COMMENT statements placed within SQL statements ?

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select Nth highest salary by using rownum

4 Answers   Ford, TCS, Tech Mahindra,

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Define atomicity and aggregation.

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Have you heard about sixth normal form?

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Is facebook a database?

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Why rdbms is called relational?

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Write a query to create a duplicate table with and without data present?

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