Design & ER Puzzle Parade

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Test your database design sense with ER clues.

Créé par

ganesh kumar

India

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Design & ER Puzzle Parade


Design & ER Puzzle ParadeVersion en ligne Test your database design sense with ER clues. par ganesh kumar 1 The framework used to model data and its connections. Hints 1 Precedes logical schemas in database design 2 Often depicted with entities, relationships, and attributes. 3 It underpins conceptual database design. 2 A basic unit representing a person, place, thing, or concept in a database. Hints 1 Found in ER diagrams as boxes 2 Groups similar entities together. 3 Could be 'customer', 'product', or 'order'. 3 A link that connects two or more entities to show how they relate. Hints 1 Often labeled with the nature of the association 2 Can be binary, ternary, etc. 3 Represents interactions between entities. 4 A property that describes an attribute of an entity. Hints 1 Appears as ovals in ER diagrams 2 Can be simple, composite, or derived. 3 Examples include name, age, salary. 5 A constraint specifying how many entities participate in a relationship. Hints 1 A key concept in mapping relationships 2 Helps define the strength of association. 3 Determines one-to-one, one-to-many, or many-to-many. 6 A constraint indicating whether all or only some entities participate in a relationship. Hints 1 Often depicted with a double line or a circle in diagrams 2 Affects whether foreign keys must be present. 3 Distinguishes total vs. partial participation. 7 An entity that cannot be uniquely identified by its own attributes alone and relies on another entity. Hints 1 Common in scenarios like dependent parts or child records 2 Often linked via an identifying relationship. 3 Usually depends on an owner entity for identification. 8 A strong entity whose representation involves complex attributes. Hints 1 Part of refining how attributes are stored in schemas 2 Contrasts with simple attributes in a strong entity 3 Has a primary key and may include multi-valued or composite attributes. 9 The process of converting an ER model into a set of relational tables. Hints 1 A bridge from conceptual design to implementation 2 Transforms entities into tables and relationships into foreign keys. 3 Involves choosing primary keys and foreign keys. 10 An identifying link that connects a weak entity to its owner to form its identity. Hints 1 Crucial for ensuring proper unique identification of weak entities 2 Often depicted as double lines in diagrams when needed 3 Used to tie a weak entity to its parent in the schema.

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Design & ER Puzzle Parade

Devinette

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Design & ER Puzzle ParadeVersion en ligne

par ganesh kumar

The framework used to model data and its connections.

Hints

A basic unit representing a person, place, thing, or concept in a database.

Hints

A link that connects two or more entities to show how they relate.

Hints

A property that describes an attribute of an entity.

Hints

A constraint specifying how many entities participate in a relationship.

Hints

A constraint indicating whether all or only some entities participate in a relationship.

Hints

An entity that cannot be uniquely identified by its own attributes alone and relies on another entity.

Hints

A strong entity whose representation involves complex attributes.

Hints

The process of converting an ER model into a set of relational tables.

Hints

An identifying link that connects a weak entity to its owner to form its identity.

Hints