SQL – Get Data from Multiple Tables Questions 1.Which of the following is not related to a Relational Database? Selection Projection Joining None of the above Answer: D. The options A, B and C are the major capabilities of the Oracle Relational Database. 2.Which of the following methods is used for writing a query with […]
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SQL – Using the Group Functions Questions 1. Which of the following is NOT a GROUP BY function? MAX MIN NVL AVG Answer: C. NVL is a general function used to provide alternate value to the NULL values. The functions MAX, MIN and AVG can be used as GROUP BY functions. 2. Which of the […]
SQL Certificate – Useful Resources The following resources contain additional information on SQL Certificate. Please use them to get more in-depth knowledge on this topic. Useful Links on SQL Certificate − Database Language SQL (Proposed revised text of DIS 9075) July 1992 (Second Informal Review Draft). − DB2 resource for SQL users. − Oracle SQL […]