The use of comparison operators like <,> or = can be done in a subquery. These kinds ofSQL Interview Questionsare a bit difficult to understand and answer accordingly. There are a lot ofSQL Interview Questionsapart from this, which the candidates must practice qualifying for the interview. Fo...
The Private Bytes counter measures the memory that is currently committed. The Working Set counter measures the physical memory that is currently occupied by the process. For 64-bit sql servers we can also check the current memory usage using the below performance counter. Performance object: SQL ...
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12.What is Bit-map index?Explain with Example.(80 % Asked in PL SQL Interview Questions) Answer: 1.If Table contains the distinct values which are not more than 20 distinct values then user should go for Bit map indexes. 2.User should avoid the indexing on each and every row and do ...
Of course, reading just that is not enough, you should have tried those things to better answer the questions. Also check out the section titled "Backward Compatibility" in books online which talks about the changes that have taken place in the new version. 1. What are constraints? Explain ...
Since view are created when a query requesting data from view is triggered, its bit slow When views are created for large tables, it occupy more memory . SQL Interview Questions and answers on Stored Procedures and Triggers What is a stored procedure?
If you've got an SQL interview coming up, you'll almost certainly be asked about JOIN clauses. Make sure you're prepared by practicing these 5 tough questions on JOINs in advance.
6.What are different types of indexes?(Mostly asked in Interview Questions For SQL) Answer: There are following types of indexes used while Indexing in SQL: 1.Normal index 2.Unique Index 3.Bit Map Index 4.Composite Index 5.B-Tree Index(Oracle considered Normal indexes as B-Tree Indexes) ...
To combat this problem, one of the drives stores a "parity" bit. Think of a math problem, such as 3 + 7 = 10. You can think of the drives as storing one of the numbers, and the 10 is the parity part. By removing any one of the numbers, you can get it back by referring to...
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