This is false.
What is cardinality?
Cardinality refers to the entity instances for which it is eligible to participate in a relationship instance. There are two types of cardinality, maximum and minimum.
What is maximum cardinality?
- The maximum cardinality of a relationship is the maximum number of instances of entity B that may be associated with each instance of entity A.
- Maximum cardinality: maximum number of entity instances that can participate in a relationship.
- One-to-One [1:1]
- One-to-Many [1:N]
- Many-to-Many [N:M]
To know more about maximum cardinality , refer:
brainly.com/question/18090451
#SPJ4
Answer:
It reverts to the original image
Explanation:
Answer:
The correct answer is C. Sometimes.
Explanation:
A database index is a structure that aims to speed up selections and selective operations on a database. An index reduces the number of comparisons required to find one or more database records. This avoids having to perform a so-called full table scan, whereby all records in the table have to be run through sequentially.
Therefore, if the search does not focus correctly on the necessary data, this search will not always determine the index of the goal. Therefore, the user must correctly handle the search keywords to collaborate with the system.
