Define each of the following terms: data definition language data manipulation language referential integrity constraint relational DBMS (RDBMS) schema

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Answer 1

Textbook Question

Chapter 5, Problem 5.1RQ

Define each of the following terms:

data definition language
data manipulation language
referential integrity constraint
relational DBMS (RDBMS)
schema

(a)

Expert Solution

Program Plan Intro

Define Data Definition Language.

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

(b)

Expert Solution

Program Plan Intro

Define Data Manipulation Language.

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

(c)

Expert Solution

Program Plan Intro

Define referential integrity constraint

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

(d)

Expert Solution

Program Plan Intro

Define Relational DBMS

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

(e)

Expert Solution

Program Plan Intro

Define Schema

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.

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04:51

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Explain the concept of referential integrity constraints and how they maintain data consistency in a relational database.

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ormulate the following queries in Structured Query Language SQL The following tables form part of a database held in an RDBMS: Employee (empNo, fName, lName, address, DOB, sex, position, salary, deptNo) Department (deptNo, deptName, mgrEmpNo) Project (projNo, projName, deptNo) WorksOn (empNo, projNo, dateWorked, hoursWorked) where Employee contains employee details and empNo is the key. Department contains department details and deptNo is the key. mgrEmpNo identifies the employee who is the manager of the department. There is only one manager foreach department. Project contains details of the projects in each department and the key is projNo (notwo departments can run the same project). WorksOn contains details of the hours worked by employees on each project, and empNo/ projNo/dateWorked form the key. Formulate the following queries in Structured Query Language SQL List all the details of employees who are female and born after 1990. List employee numbers and names of all…

Answer 2

Textbook Question

Chapter 5, Problem 5.1RQ

Define each of the following terms:

data definition language
data manipulation language
referential integrity constraint
relational DBMS (RDBMS)
schema

(a)

Expert Solution

Program Plan Intro

Define Data Definition Language.

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

(b)

Expert Solution

Program Plan Intro

Define Data Manipulation Language.

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

(c)

Expert Solution

Program Plan Intro

Define referential integrity constraint

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

(d)

Expert Solution

Program Plan Intro

Define Relational DBMS

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

(e)

Expert Solution

Program Plan Intro

Define Schema

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.

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04:51

Answer 3

Textbook Question

Chapter 5, Problem 5.1RQ

Define each of the following terms:

data definition language
data manipulation language
referential integrity constraint
relational DBMS (RDBMS)
schema

(a)

Expert Solution

Program Plan Intro

Define Data Definition Language.

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

(b)

Expert Solution

Program Plan Intro

Define Data Manipulation Language.

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

(c)

Expert Solution

Program Plan Intro

Define referential integrity constraint

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

(d)

Expert Solution

Program Plan Intro

Define Relational DBMS

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

(e)

Expert Solution

Program Plan Intro

Define Schema

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.

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04:51

Answer 4

Textbook Question

Chapter 5, Problem 5.1RQ

Define each of the following terms:

data definition language
data manipulation language
referential integrity constraint
relational DBMS (RDBMS)
schema

(a)

Expert Solution

Program Plan Intro

Define Data Definition Language.

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

(b)

Expert Solution

Program Plan Intro

Define Data Manipulation Language.

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

(c)

Expert Solution

Program Plan Intro

Define referential integrity constraint

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

(d)

Expert Solution

Program Plan Intro

Define Relational DBMS

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

(e)

Expert Solution

Program Plan Intro

Define Schema

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

04:51

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

(a)

Expert Solution

Program Plan Intro

Define Data Definition Language.

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

(b)

Expert Solution

Program Plan Intro

Define Data Manipulation Language.

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

(c)

Expert Solution

Program Plan Intro

Define referential integrity constraint

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

(d)

Expert Solution

Program Plan Intro

Define Relational DBMS

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

(e)

Expert Solution

Program Plan Intro

Define Schema

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.

Answer 8

(a)

Expert Solution

Program Plan Intro

Define Data Definition Language.

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

Answer 9

(a)

Expert Solution

Answer 10

(a)

Expert Solution

Answer 11

Expert Solution

Answer 12

Program Plan Intro

Define Data Definition Language.

Answer 13

Explanation of Solution

Data Definition language (DDL) is a computer language which is used for creating and modifying databases and schemas. The commonly used DDL commands are CREATE, ALTER, and DROP.

CREATE command is used to create a new table with the following syntax

Create table: Table name (Column definitions).

ALTER command is used to modify the existing table. The syntax is:

Alter table: Table name add new column.

DROP command is used to delete a table. The syntax is:

Drop table: Table name

Answer 14

(b)

Expert Solution

Program Plan Intro

Define Data Manipulation Language.

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

Answer 15

(b)

Expert Solution

Answer 16

(b)

Expert Solution

Answer 17

Expert Solution

Answer 18

Program Plan Intro

Define Data Manipulation Language.

Answer 19

Explanation of Solution

Data Manipulation Language is a computer language used in data structures to modify the data in the databases. The most commonly used data manipulation commands are INSERT, DELETE and UPDATE.

INSERT command is used to add records in the database. The syntax for INSERT command is:

Insert into table Table name (columns) values (values)

DELETE command is used to delete records from the table according to the condition. Syntax is:

Delete from table Table name where (condition)

UPDATE command is used to update the records in the database. Syntax is:

Update Table name set (column = value) where (condition)

Answer 20

(c)

Expert Solution

Program Plan Intro

Define referential integrity constraint

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

Answer 21

(c)

Expert Solution

Answer 22

(c)

Expert Solution

Answer 23

Expert Solution

Answer 24

Program Plan Intro

Define referential integrity constraint

Answer 25

Explanation of Solution

Refential Integrity constraint is the concept used in a relational database which ensures that the tables in the database are in a consistent state. This statement means that if there is any foreign key used in the database, it must be agreed with the primary key which is referenced from that foreign key. Any changes in the primary key must be updated in the foreign key as well.

Answer 26

(d)

Expert Solution

Program Plan Intro

Define Relational DBMS

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

Answer 27

(d)

Expert Solution

Answer 28

(d)

Expert Solution

Answer 29

Expert Solution

Answer 30

Program Plan Intro

Define Relational DBMS

Answer 31

Explanation of Solution

Relational Database Management System (RDBMS) is a type of DBMS which is used for the data stored in relational databases in the form of tables (combination of rows and columns). RDBMS is mainly used to store the data related to manufacturing, finance, logistic, and other applications. It uses SQL commands to access the databases.

Answer 32

(e)

Expert Solution

Program Plan Intro

Define Schema

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.

Answer 33

(e)

Expert Solution

Answer 34

(e)

Expert Solution

Answer 35

Expert Solution

Answer 36

Program Plan Intro

Define Schema

Answer 37

Explanation of Solution

Schema is a structure or architecture of the database which is supported by the DBMS. It is considered as the blueprint of how the database is constructed. The schema is stored in the data dictionary generally by the database. It defines the objects in the databases.