Which of the following is NOT an aggregate function?
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Which command is used to change the structure of a table?
Which command is used to change the structure of a table?
What is the disadvantage of indexes:
What is the disadvantage of indexes:
In relational databases, an attribute is represented by:
In relational databases, an attribute is represented by:
A relationship between two tables that results in creating a…
A relationship between two tables that results in creating a third table to represent the relationship is:
A join: matches rows from two tables based on the value of a…
A join: matches rows from two tables based on the value of a common column. A join that includes rows that don’t have matching values is called:
An example of an information retrieval system:
An example of an information retrieval system:
Which of the following is NOT an objective of information re…
Which of the following is NOT an objective of information retrieval?
The size of viruses is usually measured in:
The size of viruses is usually measured in:
Based on the ICTV classification system, SARS-COV2 belong to…
Based on the ICTV classification system, SARS-COV2 belong to which family?