Q. What is unique role assumption?

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Q. The process of making a normalized schema unnormalized is called as _________

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Q. State true or false: Crosstabs are not desirable in a database design

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Q. The data that have a time interval associated with them during which they are valid are called as ________

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Q. The value of the data at a particular time is called as?

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Q. Functional dependencies that have a time associated with them during which they are valid are called as________

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Q. State true or false: Overlapping time intervals cannot be prevented

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Q. Which of the following is the time of temporal data that record when a fact was recorded in a database?

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Q. To specify the foreign keys in relations referencing temporal data we need to specify _______

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Q. A relational database consists of a collection of

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Q. A ________ in a table represents a relationship among a set of values.

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Q. The term _______ is used to refer to a row.

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Q. The term attribute refers to a ___________ of a table.

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Q. For each attribute of a relation, there is a set of permitted values, called the ________ of that attribute.

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Q. Database __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.

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Q. Course(course_id,sec_id,semester)
Here the course_id,sec_id and semester are __________ and course is a _________

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Q. Department (dept name, building, budget) and Employee (employee_id , name, dept name,salary)
Here the dept_name attribute appears in both the relations .Here using common attributes in relation schema is one way of relating ___________ relations.

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Q. A domain is atomic if elements of the domain are considered to be ____________ units.

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Q. The tuples of the relations can be of ________ order.

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Q. The ______ is the one in which the primary key of one relation is used as a normal attribute in another relation.

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