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  • Suraku Academy | DBMS - Data Models Solved MCQs & PYQs

Q: 1 Which of the following is a hierarchical database system?

  1. DBMS

  2. IMS

  3. MNS

  4. None of the above

[ Option B ]

IMS (Information Management System) is a well-known hierarchical database management system developed by IBM.
In IMS, data is organized in a tree-like structure with parent–child relationships, where each child has only one parent.

Q: 2 In the network database model, which type of relationship exists?

  1. Parent-child relationship

  2. Owner-member type relationship

  3. Member-member type relationship

  4. None of the above

[ Option B ]

The Network Model represents relationships using the set construct, where each set consists of an owner record and one or more member records. This is known as an owner–member relationship and allows a record to have multiple parents, supporting many-to-many relationships.

Q: 3 Which database model uses a tree data structure?

  1. Relational model

  2. Hierarchical model

  3. Network model

  4. Object-Oriented model

[ Option B ]

The hierarchical database model organizes data in a tree-like structure, where each parent record can have multiple child records, but each child has only one parent. This represents a one-to-many relationship.

DATA MODELSTRUCTURE USEDDESCRIPTION
Hierarchical ModelTreeData is organized in parent–child form with one-to-many relationships.
Network ModelGraphRecords are connected using pointers allowing many-to-many relationships.
Relational ModelTables (Rows & Columns)Data is stored in tables and accessed using SQL.
Entity-Relationship (E-R) ModelDiagrammaticUsed for conceptual database design using entities and relationships.
Object-Oriented ModelObjectsData is stored as objects with attributes and methods.
Object-Relational ModelTables and ObjectsRelational model extended with object-oriented features.
Distributed Data ModelMultiple sitesData is stored across different locations but works as one database.

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