View of Data Quiz Questions and Answers PDF - 409

MCQ 2041: Data model that permits the specification of data where individual data items of same type may have different sets of attributes, is known as

1. Relational Model
2. Entity relationship model
3. Object-based Data model
4. Semi-structured data model

MCQ 2042: The architecture layer of the application that provides a high-level view of data and actions on data is known as

1. Business-logic layer
2. View-logic layer
3. Domain-logic layer
4. Data-logic layer

MCQ 2043: The various copies of the same data may no longer agree, is the process known as

1. Data redundancy
2. Data Isolation
3. Data Duplication
4. Data Inconsistency

MCQ 2044: The database system stores the query expression associated with the

1. View
2. View definition
3. View relation
4. View schema

MCQ 2045: A special value that signifies that the value is unknown or does not exist, is said to be

1. Null
2. Unknown
3. Known
4. 0