schema level called

The process of the transforming request and result between schema level called :

• Mapping

• Data Transformation

• Three schema architecture

• Data independence

Adding an access path like a three to organize data is considered a change in the :

• Conceptual

  schema

• External schema

• Internal schema

• All of the above

Which of the following requires concurrency control:

• Flat file system

• Database System

• None of the above

• OLTP system

The following is considered an integrity constraint:

• Specifying a data type

• Specifying unique values of data items (attributes)

• Specifying that a record in one file must exist in another file

• All of the above

The capacity to change the conceptual schema without having to change the external schemas :

Data used to describe the data and constraints of a database:

The data types and data formats of the database are stored in the:

May present inconsistency due to data redundancy :

The correct order of the database design is :

Specifying the domain of an attribute is a :