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Why do you go for sorting your query results? SQL SELECT command to fetch data from MySQL table. Whenever you select rows, the MySQL server is free to return them in any order
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Due date for May 8
What is a guard condition? Explain it with a suitable example. The guard-condition is a Boolean expression written with respect to parameters of triggering event and attributes
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
Describe the functions and features of foreign key? Foreign Key : The primary key of one file or table that is implanted in another file or table to implement the relationships
What is hash file organization? What are the causes of bucket overflow within a hash file organization? What can be completed to decrease the occurrence of bucket overflow?
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
Synonyms It allows short names or alternative names for objects. Example : CREATE SYNONYM D30 FOR EMPD30; Now if we give command:
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