COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tuple
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Entity
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Degree
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Cardinality
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Detailed explanation-1: -Degree: The total number of attributes contained in the relation is the attribute count. Cardinality: A relation’s cardinality, or the total number of rows it contains, indicates the number of entities that are engaged in the relationship.
Detailed explanation-2: -In DBMS, a degree of relationship represents the number of entity types that associate in a relationship. For example, we have two entities, one is a student and the other is a bag and they are connected with the primary key and foreign key.
Detailed explanation-3: -An attribute is what a column in a relational database is called. For instance, if some columns in a database are called “name, ” “age” and “address, ” then each of those is an attribute.
Detailed explanation-4: -The number of tuples in a relation is called its cardinality, while the number of attributes in a relation is called its degree.
Detailed explanation-5: -Attribute: It is a column of a table. Degree: Number of columns in a table. Cardinality: Number of rows in a table.