Software Programming : Database Management QUESTIONS AND ANSWERS :: part20 : 6 to 10
Following Software Programming language Entrance Multiple choice objective type questions and answers will help you in Software Programming 2024 examinations :
6.A super key that does not contain a subset of attributes that is itself a super key is called a |
| Candidate key |
| Primary key |
| Super key |
| Secondary key |
| Foreign key. |
7.In the context of a database table, the statement "A determines B" indicates that #315.In the context of a database table, the statement "A determines B" indicates that |
| Knowing the value of attribute A you can not look up the value of attribute B |
| You do not need to know the value of attribute A in order to look up the value of attribute |
| Knowing the value of attribute B you can look up the value of attribute A |
| Knowing the value of attribute A you can look up the value of attribute B |
| None of the above. |
8.A table that displays data redundancies yields ____________ anomalies. |
| Update |
| Insertion |
| Deletion |
| All of the above |
| None of the above. |
9.Which of the following is not true about B+ trees? |
| B+ tree index takes the form of balanced tree |
| Performance of B+ tree degrades as the file grows |
| Look-up in B+ tree is straightforward and efficient |
| Insertion and deletion in B+ tree is complicated but efficient |
| None of the above. |
10._______ means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed. |
| Serializability |
| Atomicity |
| Isolation |
| Time stamping |
| Durability. |
More Database Management QUESTIONS AND ANSWERS available in next pages
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