The number of tuples in a relation is referred to as

Q: The degree of a relation is the number of its columns. True False

A: Defined the given statement as true or false

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: A attribute in a relation is a foreign key if the _______ key from one relation is used as an…

A: A foreign key is a key used to link two tables together. This is sometimes also called as a…

Q: For each of the relations created, indicate its normal form. If the relation is not in the 3NF,…

A: Normalization divides the table into smaller tables, removes any anomalies and links them using…

Q: Create relational schemas for the ER diagram given below. Indicate clearly the primary and foreign…

A: Relations :  =>   Relation is sometimes used to refer to a table in a relational DB. =>   It…

Q: In mathematical term Table is referred as a. Relation b. Attribute c. Tuple d. Domain

A: In mathematical term Table is referred as a. Relation b. Attribute c. Tuple d. Domain

Q: A relation cannot have: Multi-values attributes Several super-keys O Composite attributes Attributes…

A: Answer:

Q: Write a detailed contrast between "Relation" & "Relationship" in Dbms

A: Relation refers to a single table in DBMS whereas relationship refers to how two tables are…

Q: An attributes in a relation coming from another relation is called: * O foreign key fields…

A: An attributes in relation coming from another relation is called

Q: Under what circumstances can an attribute of a relation be of variable length?

A: An attribute of a relation is the characteristic which is specified in a column. A relation is a…

Q: Computer science What is the relationship between the primary key of a relation and the…

A: The Answer is in step2

Q: 1)A tuple is a named column of a relation. True or alse 2)Each attribute in a relation has a…

A: Since you have asked multiple question, we will solve the first 3 questions for you. If you want any…

Q: The following functional dependencies describe a relation that is in 2NF. Customer_ID, Store_ID→…

A: Rules of 2NF: Table must be in 1NF No non-prime attribute is dependent on the proper subset of any…

Q: Convert the following ERD to relation schemas. EXPLAIN your answer. Dept Course number Name Name Id…

A: The Answer is

Q: In mathematical term Row is referred as a. Relation b. Attribute c. Tuple d. Domain

A: In SQL and other relationship databases,

Q: Computer science Explain how the primary key in the same relation is referenced.

A: Introduction: The primary key constraint requires that each row in the relational database…

Q: What are the references to the main key in the same relation?

A: Introduction: The primary key constraint requires that each row in the relational database…

Q: Under what circumstances can a relation have duplicate rows?

A: GIVEN: Under what circumstances can a relation have duplicate rows?

Q: is the number of attributes/fields in a relation. a. Degree b. Cardinality O c. Tuple d. Row

A: Degree: In DBMS, degree is the number of attributes or column present in the table Cardinality: In…

Q: What is PrOPertieS Of relAtiOnS?

A: Given:  Properties of Relation

Q: Indicate all the functional dependencies and the normal form for each relation

A: The functional dependencies are the unique relationships between the attributes. For the table given…

Q: The value of the candidate key cannot uniquely identify each tuple in a relation. True O False…

A: 1. The Value of the Candidate key is used to Identify the unique tuple in the relation. Your Answer…

Q: The degree is the number of tuples in a relation. Select one: a. False b. True

A: Relational Database: Table is called as relation or file. Row is called as tuple. Column is called…

Q: Using the following relations: Relation s ABC 1 2 2 3 1 1 1 1 Relation t BcD 2 1 1 2 3 3 2 1 Give…

A: As per our guidelines, only 3 sub parts will be answered. So, please repost the remaining questions…

Q: A relation takes a students identification number at your college as input and outputs the students…

A: A relation takes a students identification number at your college as input and outputs the students…

Q: List all nontrivial functional dependencies satisfied by the relation of Figure7.18.

A: Given: List all nontrivial functional dependencies satisfied by the relation of Figure7.18.

Q: cher(ID, name, S ary key of the re ary of the relatic relation is 300 a maximum size

A:

Q: When the foreign key refers to a tuple which does not exists in subjected relation then the…

A: Referential integrity constraint - If a foreign key exists in a relation, then the foreign key value…

Q: What exactly is a Ternary Relationship, and how does it function?

A: We know that the relationship of degree three is when three entities participate in an association…

Q: A relation that has no transitive dependencies is in __________ normal form.

A: Normalization  in DMBS :  In designing the database, there is a requirement to remove all the types…

Q: Define the term Relation?

A: Answer: A relation between two sets is a collection of ordered pairs containing one object from…

Q: w many partial dependencies exist in the relation? v many full dependencies exist in the relation? w…

A: 1)  Closure (AE) ={A, E, B, C, D, F, G} Closure (AEI) ={A, E, I, B, C, D, F, G, H, J, K, L} Key for…

Q: 18. The relation with the attribute which is the primary key is referenced in another relation. The…

A: Please find the answer to the above question below:

Q: :When the primary key is not a composite key, the relation is said to be in at least fifth normal…

A: Lets see the solution.

Q: . The basic operations that can be performed on relations are a. deletion b. insertion c.…

A: There are three basic operations that can change the states of relations in the data-base: Insert,…

Q: List three conditions that you can apply to determine whether a relation that is in first normal…

A: Given: List three conditions that you can apply to determine whether a relation that is in first…

Q: What is the relationship between the primary key of a relation and the functional dependencies among…

A: The fundamental rule of normalization says that each of the non-key attributes should be completely…

Q: In the figure below, STUDENT relation has a composite primary key contains Stud_ID and Course_ID.…

A: The Answer is  in Below Steps

Q: A relation that has no partial functional dependencies is in ___________ normal form.

A: Given:   A relation that has no partial functional dependencies is in ___________ normal form.…

Q: . Foreign key is the one in which the ________ of one relation is referenced in another relation. a.…

A: In DBMS, keys are used to uniquely identify data in a table. Multiple keys from different tables can…

Q: A relation is a function only if any two first values in the pairs are the same. True or False

A: Given: A relation is a function only if any two first values in the pairs are the same. True or…

Q: A relation that has no multivalued attributes is in _____ normal form.

A: GIVEN: A relation that has no multivalued attributes is in _____ normal form.

Q: STION 9 is used to represent the M: N relationships between two or more entities. A Mandatory B.…

A: M:N relationship: Relationships helps to connect the  related information between the  tables. They…

Q: Assume a user creates a new relation r1 with a foreign key that links to another relation r2. What…

A: Introduction: A FOREIGN KEY is like a field (or set of fields) in one database that refers to the…

Q: TF (c) If a relation is not in BCNF, then it has at least three attributes in the schema.

A: If a relation is not in BCNF, then it has at least three attributes in the schema.

Q: If you assume that a relation has no duplicate data, how do you know there is always at least one…

A: We can always be sure that there is always at least one primary key. Consider the situation when…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.