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______________ is a set of one or more attributes taken collectively to uniquely identify a record.

______________ is a set of one or more attributes taken collectively to uniquely identify a record. Correct Answer Super key

Foreign key creates a relationship between two relations. Super key is the superset of all the keys in a relation. A candidate key is used to identify tuples in a relation.

Related Questions

Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?
Consider the following policies for preventing deadlock in a system with mutually exclusive resources. I. Processes should acquire all their resources at the beginning of execution. If any resource is not available, all resources acquired so far are released II. The resources are numbered uniquely, and processes are allowed to request for resources only in increasing resource numbers III. The resources are numbered uniquely, and processes are allowed to request for resources only in decreasing resource numbers IV. The resources are numbered uniquely. A process is allowed to request only for a resource with resource number larger than its currently held resources Which of the above policies can be used for preventing deadlock?
In a survey of university students, 64 had taken Drama course, 94 had taken Dance course, 58 had taken a Singing course, 28 had taken Drama and singing course, 26 had taken Drama and dance course, 22 had taken Dance and singing course, and 14 had taken all the three courses. Find how many have taken only one course?
In a survey of 25 students, it was found that 15 had taken Mathematics, 12 had taken Physics and 11 had taken Chemistry, 5 had taken Mathematics and Chemistry, 9 had taken Mathematics and Physics, 4 had taken Physics and Chemistry and 3 had taken all the three subjects. Find the number of students who had taken both Physics and Chemistry but not Mathematics.
Which of the following statements are correct with regard to the 'truth and validity' in logical reasoning. Select the correct code from the below: (a) Truth and falsity are attributes of individual propositions. (b) Validity and invalidity are attributes of individual propositions. (c) Truth and falsity are attributes of arguments. (d) Validity and invalidity are attributes of arguments. Code:
A _____ means that one record in a particular record type may be related to more than one record of another record type.
A Key which is a set of one or more columns that can identify a record uniquely is called?
A _____ means that one record in a particular record type is related to only one record of another record type.
When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n):
Which of the following places the common data elements in order from smallest to largest? 1. Character, File, Record, Field, Database 2. Character, Record, Field, Database, File 3. Character, Field, Record, File, Database 4. Bit, Byte, Character, File, Record, Field, Database Select the correct answer using the codes given below.