Which of the following is true of foreign keys?     A foreign key should always be linked to a primary key of another table. A foreign key could be linked to a candidate key of a table. A foreign key is not needed if the data type is different. A foreign key can be linked to any foreign key.

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Q: Explain Disallow null keys in fact tables?

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A: A table is in 3NF (third normal form) if the table is in 2NF and there is no transitive dependency…

Q: What does the term "transitive" mean? What is the rule for converting tables in the second normal…

A: Given question has asked to :- i) Write down the normalised form. ii) Identify the repeating group…

Q: Does a foreign key have to refrence all the primary key fields of another

A: Primary key is an attribute or group of which uniquely identifies each row of the table.  Foreign…

Q: Prescription is in 2NF. Is table Prescription in 3NF, given the dependencies? If yes, why? If not,…

A: Data Structure Software: Tools are necessary to eliminate excess and inconsistencies, preserve…

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A: Database Management System (or DBMS) Essentially nothing more than a computer-based data storage…

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A: A functional dependence is a constraint between two sets of attributes in a relation in a database…

Q: The meaning of the word "transitive" We know that tables in second normal form can be changed to…

A: Prior to discussing transitive dependence, it is important to comprehend the difference between…

Q: Two students are registered for one course. Can both students get the last database seat?

A: Given: There are two college students that must sign up for the course. But, there is just one seat,…

Q: A table R can be linked with more than one tables at the same time.  Select one: True False

A: A table R can be linked with more than one tables at the same time.  Select one: True False

Q: The Car Maintenance team also wants to store the actual maintenance operations in the database. The…

A: DELETE CASCADE: - When we constitute a foreign key using this option, it deletes the referencing…

Q: What is the difference between an INNER JOIN and a LEFT JOIN? a. an INNER JOIN is an obsolete form…

A: In the realm of relational databases and SQL, the use of JOIN operations is pivotal for combining…

Q: There are ten columns in the table "customer," yet there is no row. A total of 10 new rows are added…

A: TipA table is a list of connected data kept in a database in table format. A table in relational and…

Q: What is the difference between a UNIQUE and a PRIMARY KEY constraint? (See the tables in the JustLee…

A: Key in Database: Key constraint is used to identify the records uniquely in the table. The Table may…

Q: What does it mean to be transitive? Tables in the second normal form can be converted to tables in…

A: Transitive dependence: Before we can go on to transitive dependence, we need to first have a solid…

Q: What is the difference between disabling a constraint and dropping a constraint? ( refer to the…

A: Difference between disabling a constraint and dropping a constraint: The differences are given as a…

Q: uiring a CustomerID to exist in a Primary table before it can exist in a fore able is an example of…

A: Correct answer :True

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A: The Given Properties Table contains 10 attributes. Consider property_id as the key. The performance…

Q: What exactly is a main key? How crucial is the main key in establishing a link between tables?

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Q: What data types would you use for the attributes in this entity? How would you code a CREATE TABLE…

A: In a database management system (DBMS), an attribute is a piece of data that describes an entity.…

Q: If something is transitive, what does that entail? What is the rule for converting tables from the…

A: Answer is

Q: What are the implications of having multiple candidate keys in a relational table?

A: In the realm of relational databases, candidate keys play a pivotal role in ensuring the integrity…

Q: Is it possible for you to identify a composite main key from a candidate key?

A: What is candidate key ? The candidate key is the set of one or more attributes that uniquely…

Q: What is the difference between a UNIQUE and a PRIMARY KEY constraint? (See the tables in the JustLee…

A: Introduction: When creating a table, a primary key is used to identify each row in the table, while…

Q: What does the term "transitive" mean? What is the rule for converting tables in the second normal…

A: The term transitive can be defined in such a way when there is interdependency in more than one…

Q: Explain the distinction between an inner and an outer join.

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A: Answer: A null value in a relational database is involved when the value in a column is obscure or…

Q: Consider a database table named "EMPLOYEES" with the following columns: E_EMPLOYEEID, E_FIRSTNAME ,…

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A: Answer: I have done code  and also I have attached code as well as code screenshot.

Q: What is the difference between a PRIMARY KEY constraint and a UNIQUE constraint? ( refer to the…

A: Primary key is one of the columns of the table which uniquely identifies each row in that table.…

Q: What exactly is meant by the term "transitive"? It is possible to convert tables that are in the…

A: Introduction: Prior to discussing transitive dependence, it is important to comprehend the…

Q: Write down DML commands to add 1 record into each table you have created in picture below. All…

A: DML(Data Manipulation Language) commands are used to create a table, insert records into the table,…

Q: What exactly is meant by the term "transitive"? It is possible to convert tables that are in the…

A: Solution: We must first grasp prime and non prime properties before moving on to transitive…

Q: What is outer Join?

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Q: What is Temporary Table and what are the two types of it? They are tables just like regular tables…

A: Temporary Table and the two types of it:-

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A: A)   DECLARECursor c1 is select table_name from user_tables; BEGINOPEN c1;FETCH c1 INTO tables c1…

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A: TASK 1: -- Creating a new table MAINTENANCE_TYPES with following fields create table…

Q: I need help creating a table in Java/HTML from a SQL database. My syntax isn't working. DB table:…

A: For creating table in Java from a SQL database, we ca use JDBC connection. import java.sql.*; public…

Q: What does it mean to be transitive? Tables in the second normal form can be converted to tables in…

A: Answer: Before we can go on to transitive dependence, we need to first have a solid understanding of…

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.