constraint requires that an entity belong to no more than one lower-level entity set. O Total O Uniqueness O Overlap O Disjointness

Q: Code for Mapping relationship with Entity Framework Code First: One-to-one and variations

A: Code to map one-to-one type relationships using Entity Framework.

Q: Explain the distinction between disjoint and overlapping constraints.

A: In the disjoint, the user can only put the constraint in only one class. In the overlapping, the…

Q: What are the differences between weak and strong entity sets?

A: An entity set is a compilation of similar types of entities. Entities are a crucial idea in…

Q: In an ERD, entities do not have columns. Instead which of the following is used to describe the…

A: In the intricate world of data modeling, where the digital realm mirrors the complexities of the…

Q: Explain entity sets.

A: Entity sets are a fundamental concept in the field of entity-relationship modeling, which is used to…

Q: relation's main key and its functional interactions amongst its characteristics are interconnected

A: Please find the answer below :

Q: Generalization is the process of defining a general entity type from a collection of specialized…

A: Generalization is a process of a new entity being formed using the collection of two or more…

Q: It is the relation among individual entities and values. O principles patterns state relation

A: In  Step 2, I have provided   correct  option-----

Q: Why are weak and strong entity sets different?

A: Entity sets in database design refer to collections of related entities or objects. Weak entity sets…

Q: Which of the following is the term for whether or not an instance of one entity class must…

A: Ordinality refers to the sequence or order in which instances of one entity are associated with…

Q: Explain the relationship between the primary key of a relation and the functional dependencies that…

A: Introduction: A primary key is a database characteristic that uniquely identifies a record.

Q: Please transform the following Entity-Relationship Schema (Diagram) into a Relational Schema. Please…

A: Here PNo and SSno are primary key.  The following are the entities : PROJECT, EMPLOYEE, ENGINEER The…

Q: Consider the following entity relationship diagram. Booking Employee Building • Booking ID > •…

A: Every booking is associated with exactly one employee. Answer: True   Every employee is associated…

Q: List the relation’s superkey(s) List the relation’s candidate key(s) Explain the Entity integrity…

A: The given is a relation named Student which holds the attributes to store the details about a…

Q: When an attribute of one entity type references another entity type's attribute, this means that: O…

A: The solution is given in the below step with explanation

Q: The difference between a weak entity set and a strong entity set should be explained.

A: Strong Entity:  A powerful entity does not rely on any other entity in the schema for its existence.…

Q: Which one of the following is defined as" the requirement that actions of an entity may be traced…

A: Accountability is the property that guarantees that the activities of a substance might be…

Q: 1. Describe entity constraint in your own words  2. what type of key satisfies the uniqueness…

A: This constraint says that the primary key of a table can never be a null value. The primary key is…

Q: ERD and Keys A hotel has many rooms.  A guest can make a reservation for one room or multiple…

A: ERD is called the Entity-Relationship model. ERD diagrams are used to draw the relationships between…

Q: How are overlapping and disjoint constraints different from one another?

A: When it comes to defining rules and constraints in various contexts, such as software development,…

Q: The cardinality ratio depends on the real-world meaning of the entity types involved and is defined…

A: 1.A student can only one Social Security number while a Social Security number can belong to only…

Q: Define the following constraints: Primary Key Unique What is the difference between these two…

A: Primary Key: It is a constraint used in the database table for making a column unique so that users…

Q: Deacribe relationship between primary key of a relation and the functional dependencies among all…

A: To be determine: Describe relationship between primary key of a relation and the functional…

Q: Choose the resultant relation(s) after transforming the below ERD. A2 A1 A3 ENTITY A Rel O A.…

A: A relationship between two entities of a similar entity type is called a recursive relationship.…

Q: What is NOT another name for an associative entity? Linking table Bridge entity…

A: An Association Entity in the Business Data Model (BDM) represents a mapping between two base…

Q: Define the connection between a relation's main key and the functional relationships between all of…

A: Introduction: As the name implies, a functional relationship expresses the influence of one variable…

Q: Primary key identifies a unique tuple of a relation, true or false?

A: Primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a…

Q: Explain the difference between a candidatekey and the identifier of an entity type.

A: Given: Explain the difference between a candidatekey and the identifier of an entity type.

Q: A relationship between entity supertype and entity subtype is known as  ___

A: Subtype: Sub grouping of the entities in an entity type. Supertype: Supertype is a generic entity…

Q: When must a many-to-many relationship bemodeled as an associative entity

A: Given: When must a many-to-many relationship be modeled as an associative entity.

Q: Select the characteristics of composition constraints: are used to enforce a quantity that depends…

A: Composition constraints- For reducing the code duplication and increase readability by combining…

Normalization

Normalization is the process of eliminating redundancy in a database by organizing the data into several smaller tables. The large tables are normalized (converted) into smaller tables by using normalization rules, so that a database administrator can easily handle them. It also eliminates insertion, deletion, and update anomalies.