Database Concept Quiz-5

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Welcome to your Database Concept Quiz-5

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Q41. In relational data model, tables are called _______________

Q42. Each column name in a table should be unique. (T/F)

Q43. A row in a table is also known as _____________________

Q44. A column in a table is also known as ________________

Q45. Number of columns in a table is known as __________________

Q46. Number of rows in a table is known as __________________

Q47. __________________ is a set of values from which an attribute can take a value in each row.

Q48. A relation has 3 rows and 5 columns. What is the degree and cardinality of this relation?

Q49. Which of the following statement is wrong?

Q50. A special value ____________________ is used to represent values that are unknown to certain attributes.

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