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Database Management Exam 2 Questions and Answers (Latest Update 2024)
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Database Management Exam 2 Questions and Answers (Latest Update 2024)
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Database Management Exam 2Questions and Answers (Latest Update
2024)
A named two-dimensional table of data.
No multi-valued attributes - Correct Answer ✅ relation
Names, rows, attributes, must be unique. Every attribute
must be atomic. Order of columns and rows must be
irrelevant - Correct Answer ✅ Know the requirements for a
table to qualify as a relation
SQL aliases are used to give a table, or a column in a table, a
temporary name.
Aliases are often used to make column names more readable
- Correct Answer ✅ What is an alias in relation to
databases
E. F. Codd - Correct Answer ✅ Who developed the
relational model
A state of a relation that requires that certain rules regarding
relationships between attributes. No multi-valued attributes.
Unique rows - Correct Answer ✅ 1st Normal Form
, Database Management Exam 2
Questions and Answers (Latest Update
2024)
A relation in first normal form in which every non-key
attribute is fully functionally dependent on the primary key -
Correct Answer ✅ 2nd Normal Form
states that all column reference in referenced data that are
not dependent on the primary key should be removed.
Another way of putting this is that only foreign key columns
should be used to reference another table, and no other
columns from the parent table should exist in the referenced
table - Correct Answer ✅ 3rd Normal Form
complete picture of the database without any reference to a
particular database management system for managing these
data.
Avoid unnecessary data duplication - Correct Answer ✅
Goal of Normalization
The process of decomposing relations with anomalies to
produce smaller, well-structured relations - Correct Answer
✅ Define Normalization
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