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18. An index may be created on
I. Which of the following keys does not hold uniqueness property
17. A technique for physically arranging the records of a file on secondary storage device is called
8. tools in involved to the Data Analysis:
16. In E-R diagram, a diamond shape is used to represent a(n):
In E-R diagram, a rectangular box is used to represent a(n):
4. In activities, the possible inputs for the database are collected:
3. is called the preliminary investigation of the required database:
7. In ERD model, the relationship between two entities is represented by a
15. In E-R diagram, an oval shape is used to represent a(n):
6. Database development process involve mapping of conceptual data model into
2. An entity related to itself in an ERD model refers to
I I. In hybrid distribution which kind of fragments are stored at only one site
5. In activities, the cost factors are taken into consideration:
9. The process to identify the data objects and the relationships between them is:
is the ingredient of data modeling:
20. is not related to an entity:
19. represents entity:
12. What indicates the connection between entites
10. The relationship between the entities is represented graphically by using:
