DBMS: Intro & Modeling Quiz

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Advanced DBMS topics

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VAIBHAVA LAKSHMI K

India

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DBMS: Intro & Modeling Quiz


DBMS: Intro & Modeling QuizVersion en ligne Advanced DBMS topics par VAIBHAVA LAKSHMI K 1 Which component of a DBMS manages data definitions and schema changes? a Buffer Manager b Transaction Manager c Query Processor d Data Dictionary (System Catalog) 2 In a database system, what distinguishes a schema from an instance? a Schema is user view; instance is security policy b Schema is physical layout; instance is logical design c Schema is runtime state; instance is schema changes d Schema is the database design; instance is the data at a moment 3 Which data model uses collections of records with links to represent relationships? a Hierarchical model b Object-oriented model c Relational model d Network model 4 ER diagrams primarily model which aspect of a database? a Entities and their relationships b Data storage formats c User permissions d Query optimization paths 5 An EER diagram extends ER by including which concept? a Generalization/specialization and aggregation b Indexing strategies c Transaction scheduling d Normalization & denormalization 6 Which architectural level in a typical DBMS separates data manipulation from data storage? a Three-schema architecture (Application, Logical, Physical) b Two-tier architecture c Client-server without schemas d Monolithic architecture 7 What is a key characteristic of the hierarchical data model? a Data is organized in a tree-like structure b No support for data integrity constraints c Schemas are always dynamic d All relations are many-to-many 8 Which model best supports many-to-many relationships naturally without join tables? a Hierarchical model b Object-oriented model c Relational model d Network model 9 In DBMS architecture, what is the role of the transaction manager? a Ensures ACID properties and handles concurrency b Parses SQL queries c Manages file I/O hardware d Generates user interfaces 10 Which concept defines a set of types, relationships, and constraints that describe a database's structure? a Index b Trigger c Schema d Instance

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DBMS: Intro & Modeling Quiz

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DBMS: Intro & Modeling QuizVersion en ligne

par VAIBHAVA LAKSHMI K

Which component of a DBMS manages data definitions and schema changes?

In a database system, what distinguishes a schema from an instance?

Which data model uses collections of records with links to represent relationships?

ER diagrams primarily model which aspect of a database?

An EER diagram extends ER by including which concept?

Which architectural level in a typical DBMS separates data manipulation from data storage?

What is a key characteristic of the hierarchical data model?

Which model best supports many-to-many relationships naturally without join tables?

In DBMS architecture, what is the role of the transaction manager?

Which concept defines a set of types, relationships, and constraints that describe a database's structure?