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WorksheetsQuiz: Database Concepts and SQL
Total questions: 9
Worksheet time: 5mins
What type of relationship is described as each record in the first table being related to one and only one record in the second table, and vice versa?
One-to-Many (1:N)
Many-to-Many (M:N)
One-to-One (1:1)
None
In a one-to-many relationship, how is data related between the first and second tables?
Each record in the first table can be related to one or more records in the second table.
Each record in the second table is related to only one record in the first table.
Each record in both tables can be related to multiple records in the other table.
In a many-to-many relationship, what is used to represent the relationship between records in the first and second tables?
Foreign Keys
Primary Keys
Intermediary Table
Which SQL command is used to retrieve specific data from a database?
SELECT
UPDATE
INSERT
What SQL command is used to add new records to a table?
INSERT
UPDATE
DELETE
What type of constraint is used to ensure each record in a table has a unique identifier?
Foreign Key
Primary Key
Unique Constraint
Which SQL command is used to define the structure of a new table?
CREATE TABLE
ALTER TABLE
DROP TABLE
Which SQL clause is used to group rows based on specified columns?
GROUP BY
ORDER BY
HAVING
What SQL function is used to count the number of rows in a result set?
SUM
AVG
COUNT
