Which of these are not part of the levels of the ANSI-SPARC architectureGroup of answer choicesSystem LevelPresentation levelExternal LevelInternal LevelConceptual Level

To determine which of the given options are not part of the levels of the ANSI-SPARC architecture, we need to first understand the levels defined by the ANSI-SPARC model. The ANSI-SPARC architecture is a framework for database management systems and it defines three levels of abstraction:

1. External Level: This is the highest level and it describes how individual users view the data. Each user can have a different view of the database, which is called a user view or external schema.

2. Conceptual Level: This is the middle level and it provides a community user view. It describes what data is stored in the database and the relationships among those data. This level hides the details of the physical storage structures and focuses on describing entities, data types, relationships, user operations, and constraints.

3. Internal Level: This is the lowest level and it describes how the data is physically stored in the database. It deals with the physical implementation of the database to achieve optimal runtime performance and storage space utilization.

Given these three levels, let's analyze the provided options:

• System Level: This is not a recognized level in the ANSI-SPARC architecture.
• Presentation Level: This is also not a recognized level in the ANSI-SPARC architecture.
• External Level: This is a recognized level in the ANSI-SPARC architecture.
• Internal Level: This is a recognized level in the ANSI-SPARC architecture.
• Conceptual Level: This is a recognized level in the ANSI-SPARC architecture.

Therefore, the options that are not part of the levels of the ANSI-SPARC architecture are:

• System Level
• Presentation Level