Explain the distinctions among the terms primary key, candidate key, and superkey.

Q: Contrast the terms natural primary key; surrogate primary key?

A: Answer: PRIMARY KEY: It is a single or group of attributes from the given relationship table that is…

Q: What advantages does using a surrogate key provide?

A: Introduction: A surrogate key, also known as a synthetic primary key, is created when a database…

Q: 1. what is the relationship between Functional Dependency and Normalization? 2. partial dependency…

A: step 1 The answer for above questions is given in the below step;

Q: Define the term Relational Key?

A: Keys ar important a part of on-line database model. they're wont to establish and establish…

Q: Define the term Candidate key?

A: Answer: In relational database, a candidate key is a single column or the least combination of…

Q: Discuss the difference between a secondary key and a surrogate key

A: Secondary key - Basically secondary key detects a unique record in a table. It is necessary that all…

Q: What are the conditions under which an attribute of a relation may have a changeable length?

A: Introduction: An attribute is defined as a trait or characteristic found in a person, a place, or an…

Q: What exactly is meant by the term "partial dependence," and how does it function? What is the…

A: Introduction: It is related to the second standard form (2NF).

Q: Define the term unique key and give an example.

A: A unique key is a column or field which uniquely identifies database record. It is same as the…

Q: Define the phrases "primary key," "candidate key," and "superkey."

A: I have provided  answer in Step 2-------------------

Q: State two essential properties of a candidate key.

A: Candidate key: A candidate key is a set of minimal attributes that uniquely identify the row in a…

Q: Define key term disjointness constraint?

A: Define key term disjointness constraint?

Q: Can composite characteristics be included in composite keys?

A:

Q: Please provide an example of what is meant by the term "Key Attribute."

A: Given that : Crucial CharacteristicA data item or a value that is used to identify a record in a…

Q: Define the term Primary key?

A: Given:   Define the term Primary key?

Q: What is PrOPertieS Of relAtiOnS?

A: Given:  Properties of Relation

Q: 32 of 40 Suppose attribute A is a key in the relation R. Which of the following statements is not…

A: Attribute A is a key in given relation R. And we have to check, which statement is not correct in…

Q: Discuss: Composite Primary Key, Foreign Key, Candidate Key, Unique Constraint,

A: GIVEN: (ii) Discuss: Composite Primary Key, Foreign Key, Candidate Key, Unique Constraint,

Q: Give some instances of relations (tables) that may have more than one candidate key in their…

A: Suppose we have relation between Driver and Car where driver will ride only car and a car will be…

Q: What advantages come with using a surrogate key?

A: Introduction: The following are the advantages of utilising a proxy key:

Q: Give an example and an explanation of the phrase "foreign key"

A: Foreign key - It is used to join or make relationship between two tables using primary key. primary…

Q: Define the term Surrogate primary key?

A: These types of keys do not have any business meaning in the database.

Q: What are the advantages of employing an enterprise key?

A: Advantage of employing an enterprise key

Q: Define the term Composite key?

A: Given: Define the term Composite key?

Q: Thanks for the explaination. Then, what is the difference between a candidate key and a super key?

A: Candidate key is a key which can uniquely determine all tuple of the relation.

Q: What’s the Definition of a Surrogate Key?

A: Answer is in step 2

Q: List three common scenarios in which relations should be denormalized prior to database…

A: Introduction: A normalised database typically involves combining several tables to get queries;…

Q: What are the three circumstances in which it is recommended that relations be denormalized prior to…

A: Given: What are the three circumstances in which it is recommended that relations be denormalized…

Q: Give an example of a relationship with a single composite key.

A: Intro A unique key is one that identifies a row in a relation uniquely. The unique key may be…

Q: Discuss the notion of a candidate key being a characteristic that is part of a composite primary…

A: Introduction: Discussion should be had on the concept of a candidate key being a trait that is part…

Q: Contrast the terms foreign key; primary key?

A: Primary key: Primary key is used for identifying the data uniquely hence two rows cannot have the…

Q: What is the Meaning of ENHANCED_KEY?

A: ENHANCED_KEY An ENHANCED_KEY includes 101 or 102 keys. It is the 12 function key running across the…

Q: Contrast the terms candidate key; primary key?

A: Given:   Contrast the terms candidate key; primary key?

Q: Explain the term foreign key and give an example

A: Given:- Explain the term foreign key and give an example

Q: Consider R1(A, B, C, D) with the above functional dependencies. What would be a candidate key for…

A: The complete answer is given below

Q: State nine rules of thumb for choosing indexes.

A: State nine rules of thumb for choosing indexes.

Q: According to what you understand, what is the relationship between Functional Dependency and…

A: 1.The relationship between Functional Dependency and Normalization 2. Partial dependency and…

Q: Give examples of relationships (tables) with several candidate keys.

A: Multiple Candidate keys might exist in the same database at the same time. The Primary Key might be…

Q: In a database, what is an unnormalized relation? Is it a connection in the conventional sense of the…

A: Given that 'In a database, what is an unnormalized relation? Is it a connection in the conventional…

Q: Would you be able to discern the difference between a candidate key and a composite primary key in a…

A: Introduction: Key Key is an attribute or group of characteristics that identifies a relation or…

Q: Define the term primary key in terms of functional dependencies

A: Functional Dependency (FD) is a constraint that determines the relation of one attribute to another…

Q: Describe two properties that each candidate key must satisfy.

A: GIVEN: Describe two properties that each candidate key must satisfy.

Q: Explain the distinctions among the terms primary key, candidate key, and super key.

A: Given:  the distinctions among the terms primary key, candidate key, and super key.

Q: A(n) occurs if a nonkey attribute determines another nonkey attribute composite key a O insertion…

A: To find- What occurs if a non key attribute determines another non key attribute. Non-key Attribute…

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.