The database management system comprises a relational database management system, a hierarchical database management system and a mesh database management system ()

Question

Options

• ATRUE
• BFALSE

• A
  91% (29)
• B
  9% (3)

Explanation

Option A is correct because the three foundational categories of database management systems in classical database theory are indeed relational (data stored in tables with rows/columns), hierarchical (data organized in a tree/parent-child structure), and network/mesh (data organized as a graph allowing multiple parent-child relationships). These three models represent the core architectural paradigms that preceded and informed modern database design. Option B is wrong simply because denying these three classifications contradicts well-established database theory - all three models exist, are documented, and have real-world implementations (e.g., IBM IMS for hierarchical, IDMS for network, MySQL/Oracle for relational).

Memory tip: Think R-H-N ("Really Helpful Networks") - Relational, Hierarchical, Network/mesh - the three classic DBMS types. If a question lists all three together, it's almost always TRUE.

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