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Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000.
(SELECT d_name FROM dept WHERE d_code IN (SELECT d_codeFROM emp GROUP BY d_code HAVING AVG(sal) ? 10000);
Developer is required to do a task including: - Database Normalization - Database Analysis - ERM Diagram Details can be provided and then you can change your bid accord
What do you understand by a view? What does WITH CHECK OPTION clause for a view do? - A view is a virtual table which comprises fields from one or more real tables. - It is
milestone assignment
Benefits and Limitations od Data Models?
OBJECTIVES After going through this unit you should be capable to: Explain the File Based system and its limitations; Explain the structure of DBMS; Explain the
Describe Physical Data independence ? Physical Data Independence - It is capacity to modify the internal schema without having to change conceptual schema. Therefore, the exter
what is Mapping Constraints? with examples
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po
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