Which of the following might result from a many-to-many relationship? Group of answer choices exclusive subtype intersection data supertype entity recursive relationship
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- What is the attribute that could be obtained using other attributes in the Entity-Relationship Diagram? Select one: a.Multi-Valued Attribute b.Derived / Calculates Attribute c.Single-Valued Attribute d.Composite AttributeIn an entity-relationship model, which of the following is a kind of attribute that should have some value, thus cannot be left empty? Choose an answer A Multivalued attribute B Required attribute C Simple attribute D Optional attributeFill in the blank: A ____________________ is a structured collection of related data stored on a computermedium. A ____________________ attribute is an attribute whose value is different for each entityinstance. A ____________________ is an ER modeling construct depicting how entities are related. A ____________________ is a column (or a set of columns) whose value is unique for eachrow.
- ER model relationships are represented using a.) relationship keys b.) primary keys c.) crows foot symbols d.) main keys What do the cardinalities in an ER model show, (please select all that apply)? a.) only a one to one relationship. b.) the minimum number of entities that can be involved in a relationship. c.) only a many to many relationship.Let's break down the information into entities, attributes, and relationships: Entities: 1. Ship - ShipID (Primary Key) - ShipName - ShipType 2. Captain - CaptainID (Primary Key) - CaptainName - CaptainLicense 3. ShipmentTrip - TripID (Primary Key) - DeparturePort - ArrivalPort - RouteDetails 4. ShipmentManifest - ManifestID (Primary Key) - Date - GoodsList 5. Goods - GoodsID (Primary Key) - GoodsName - GoodsType (BM or LM) 6. Port - PortID (Primary Key) - Street - City - State - PostalCode - Country Relationships: - Ship to ShipmentTrip (Many-to-Many): - Ship can participate in multiple ShipmentTrips, and a ShipmentTrip can involve multiple Ships. Create a junction table `Ship_ShipmentTrip` with attributes `ShipID` and `TripID`. - Captain to ShipmentTrip (Many-to-Many): - A Captain can be assigned to multiple ShipmentTrips, and a ShipmentTrip can have multiple Captains. Create a junction table `Captain_ShipmentTrip` with attributes `CaptainID` and `TripID`. - Captain to Ship…Question 17 Which of the following is another term for a recursive relationship? Group of answer choices ternary relationship binary relationship supertype relationship subtype relationship unary relationship
- Differentiate between the following and include examples of eachsimple attribute versus composite attributesingle-valued attribute versus multi-valued attributecardinality versus participationone-to-one relationships versus many-to-many relationshipsprimary key versus composite primary keyWhich of the following about enhanced entity relationship modeling is/are correct?Question 28 Which of the following is not a basic element of the E-R Model? Group of answer choices Relationships Use cases Identifiers Cardinalities Entities
- "Weak entity type" means what? Does it hide something? What's "attribute"?How would an ER chart show sia? Please draw.An entity in X is connected numerous entity in Y, however an entity in Y is associated to only one entity in X. What it the type of relationship? Select one: a. One to many b. One to One c. None d. Many to ManyThe following pair of concepts are related in some way and different in another. Explain how the concepts are similar and how they are different. Composite Primary Key/Surrogate Primary Key