OQUe - primary key is______ a. Weak Entity b. Strong Entity...

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SUBJECT: DBS TIME : 10 min. OBJECTIVE TYPE QUESTIONS TEST Underline the correct answer for each question 1. Following is not a drawback of file systems a. Lack of Data security b. Lack of flexibility c. Redundancy d. Independent data 2. From Following Data models which model is based on the tables a. E-R model b. Relational model c. Hierarchical model d. Network model 2. Maximum number of tables for E-R diagrams which consist of entities and relations (E1-R1-E2-R2-E3) a. 2 b. 4 c. 1 d. 5 4. Which is a not true statement? a. C language is database language b. SQL is for Backend c. Oracle is Database language d. SQL support both DDL and DML 5. DML stands for? a. Data Mathematical Language b. Data Manipulation Language c. Data Maintained Language d. Direct Memory accessed Language 6. An Entity which depends on other entity and does not have sufficient attributes to form
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Unformatted text preview: primary key is______ a. Weak Entity b. Strong Entity c. Dependant Entity d. Relational Entity 7. DDL is a. Procedural b. Non Procedural c. Both a and b d. None 8.Abstraction through which relation is consider as a higher level entity is called as tity which depends on other entity and does not have sufficient attributes to form primary key is______ a. Specialization b. Generalization c. Aggregation d. Inheritance 9. Domain is a a. Set of values b. Set of entities c. Set of relations d. None 10. Customer Borrower Loan is a a. one to one b. one to many c. many to one d. many to many 10. Date of Birth of Customer is a a. Multivalued attribute b. Derived attribute c. Simple attribute d. None *********************** END* **********************...
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This note was uploaded on 10/25/2010 for the course CMPN SEM4 taught by Professor Thakur during the Spring '07 term at University of Mumbai.

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OQUe - primary key is______ a. Weak Entity b. Strong Entity...

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