a. “SELECT” command: • The “SELECT” command is used to retrieve data in a database . • General syntax for select statement is as follows: SELECT FROM TABLE_NAME • Syntax for selecting values from the table is as follows: SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME; • Example: SELECT FROM TABLENO_21; • Here, the data present in the table “TABLENO_21” is displayed.

Question

Want to see the full answer?

Answer 1

Question

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Whentheuserenters!!,themostrecentcommandinthehistoryisexecuted.In the example above, if the user entered the command: Osh> !! The ‘ls -l’ command should be executed and echoed on user’s screen. The command should also be placed in the history buffer as the next command. Whentheuserentersasingle!followedbyanintegerN,theNthcommandin the history is executed. In the example above, if the user entered the command: Osh> ! 3 The ‘ps’ command should be executed and echoed on the user’s screen. The command should also be placed in the history buffer as the next command. Error handling: The program should also manage basic error handling. For example, if there are no commands in the history, entering !! should result in a message “No commands in history.” Also, if there is no command corresponding to the number entered with the single !, the program should output "No such command in history."

Activity No. Activity Time (weeks) Immediate Predecessors 1 Requirements collection 3 2 Requirements structuring 4 1 3 Process analysis 3 2 4 Data analysis 3 2 5 Logical design 50 3,4 6 Physical design 5 5 7 Implementation 6 6 c. Using the information from part b, prepare a network diagram. Identify the critical path.

2. UNIX Shell and History Feature [20 points] This question consists of designing a C program to serve as a shell interface that accepts user commands and then executes each command in a separate process. A shell interface gives the user a prompt, after which the next command is entered. The example below illustrates the prompt osh> and the user's next command: cat prog.c. The UNIX/Linux cat command displays the contents of the file prog.c on the terminal using the UNIX/Linux cat command and your program needs to do the same. osh> cat prog.c The above can be achieved by running your shell interface as a parent process. Every time a command is entered, you create a child process by using fork(), which then executes the user's command using one of the system calls in the exec() family (as described in Chapter 3). A C program that provides the general operations of a command-line shell can be seen below. #include #include #define MAX LINE 80 /* The maximum length command */ { int…

Answer 2

Question

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Answer 6

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Answer 7

Chapter 12, Problem 1AW

Program Plan Intro

a.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Answer 8

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Answer 9

Program Plan Intro

b.

“SELECT” command:

• The “SELECT” command is used to retrieve data in a database.

• General syntax for select statement is as follows:
SELECT FROM TABLE_NAME

• Syntax for selecting values from the table is as follows:
SELECT COLUMN_NAME1, COLUMN_NAME2 FROM TABLE_NAME;

• Example:
SELECT FROM TABLENO_21;

• Here, the data present in the table “TABLENO_21” is displayed.

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 13

Ch. 12.1 - Prob. 12.1CP Ch. 12.1 - Why do most businesses use a DBMS to store their...Ch. 12.1 - When developing a C# application that uses a DBMS...Ch. 12.2 - Prob. 12.4CP Ch. 12.2 - Prob. 12.5CP Ch. 12.2 - What is the purpose of a primary key?Ch. 12.2 - Prob. 12.7CP Ch. 12.2 - If a particular column is not allowed to be null,...Ch. 12.3 - List each of the .NET components that allow an...Ch. 12.3 - Prob. 12.10CP

Solution Summary: The author explains that the "SELECT" command is used to retrieve data in a database. It retrieves data from the column "NAME" of "EMPLOYEE".

Concept explainers

Want to see the full answer?

Chapter 12 Solutions