Reena is creating a table in a database. She wants to identify every record in the table
uniquely. Which concept should she use to achieve the same?
a) Primary Key b) Candidate Key c) Foreign Key d) None of these
ii. A ………………………….. key is a field or set of fields that is used to establish a relation
between the two tables.
a) Primary Key b) Candidate Key c) Foreign Key d) None of these
iii. A table in a database has the columns Name, Age, Salary, and Address. What do you call
these columns in reference to a database?
a) Record b) Data c) Field d) Data Type
iv.……………………………. are used to perform actions, such as insert, delete, update, etc.,
on the data depending upon the criteria specified by the user.
a) Forms b) Reports c) Tables d) Queries
v. Disha wants to create an interactive interface to accept data from the users for her
application. Which object of a database can she use to do the same?
a) Query b) Form c) Table d) Report
vi. Aryan wants to embed an office document in his database. Which datatype should he use to
achieve the same?
a) OLE b) Hyperlink c) Lookup Wizard c) Memo
vii. Rudrakshh wants that the name column of a table must not be left blank. Help him to
identify the field property for this purpose.
a) Length b) Default c) Entry Required d) Format
viii. Aadya wants to create a connection between two or more tables. Suggest her the option to
accomplish the task.
a) Table b) Form c) Relationships d) Sorting
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Answer:
Primary key
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes (columns) that uniquely specify a tuple (row) in a relation (table). Informally, a primary key is "which attributes identify a record", and in simple cases are simply a single attribute: a unique id.
I gave the answer like this because it contains only 5 points
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Answer:
(ii) answer is (c) foreign key.
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