More than one candidate key can exist for a table.

A table can have more than one primary key.

Data Independence is the property of the database which states that the structure of a database can be changed without having to change any application.

Sparse index items point to ---------

In ER diagram, place, person etc are denoted as -------------

Defining the role of an User is an example of ----------

The total number of attributes present in the relation is called -------------

To which of the data model type does the following demerit best attribute to: 

------ hides information about the physical storage structures and focuses

on describing

data types, entities, relationships, etc.

------ indexing an ideal option for range or group by with max, min, count type queries.