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kupik [55]
3 years ago
14

The data _____ component of a database management system (DBMS) is used to create and maintain the data dictionary. manipulation

generation definition administration
Computers and Technology
1 answer:
Ira Lisetskai [31]3 years ago
6 0

Answer:

definition

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

A data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.

In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.

This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.

Basically, when a database management system (DBMS) receives data update requests from application programs, it simply instructs the operating system installed on a server to provide the requested data or informations.

Hence, the data definition component of a database management system (DBMS) is used to create and maintain the data dictionary.

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Choose the words that make the following sentence true.<br> Primary memory is
ki77a [65]

Answer:

Primary memory is computer memory that is accessed directly by the CPU

Explanation:

8 0
3 years ago
Assuming dataFile is an ofstream object associated with a disk file named payroll.dat, which of the following statements would w
svet-max [94.6K]

Answer:

dataFile << salary;

Explanation:

To write salary to a file (payroll.dat) using ofstream, you make use of the following instruction:

<em>ofstream dataFile; </em>

<em>myfile.open ("payroll.dat"); </em>

<em>myfile <<salary; </em>

<em>myfile.close();</em>

<em />

This line creates an instance of ofstream

<em>ofstream dataFile; </em>

This line opens the file payroll.dat

<em>myfile.open ("payroll.dat"); </em>

This is where the exact instruction in the question is done. This writes the value of salary to payroll.dat

<em>myfile <<salary; </em>

This closes the opened file

<em>myfile.close();</em>

<em />

<em />

8 0
3 years ago
Draw a flow chart that accepts mass and volume as input from the user. The flow chart should compute and display the density of
TiliK225 [7]

Answer:

See attachment for flowchart

Explanation:

The flowchart is represented by the following algorithm:

1. Start

2. Input Mass

3. Input Volume

4 Density = Mass/Volume

5. Print Density

6. Stop

The flowchart is explained by the algorithm above.

It starts by accepting input for Mass

Then it accepts input for Volume

Step 4 of the flowchart/algorithm calculated the Density using the following formula: Density = Mass/Volume

Step 5 prints the calculated Density

The flowchart stops execution afterwards

Note that the flowchart assumes that the user input is of number type (integer, float, double, etc.)

6 0
3 years ago
#Write a function called "in_parentheses" that accepts a
zimovet [89]

Answer:

import regex as re

def in_parentheses(a_string):

   regeX = re.compile(".*?\((.*?)\)")

   result = re.findall(regeX, a_string)

   return str(result).replace("[","").replace("]","")

print("test 1: "+in_parentheses("Open ( only"))

print("test 2: "+in_parentheses("This is a sentence (words!)."))

8 0
3 years ago
Assuming that the actual process ids of the parent and child process are 2600 and 2650 respectively, what will be printed out at
VashaNatasha [74]

Answer:

Output explanation to the given code can be defined as follows:

Explanation:

In A the output is 0 , It will return fork value of the child process that is 0. so, 0 is printed during child process.  

In B the output is 2650 , in which the getpid() method returns the child process id  value that is 2650.  

In C the output is 140, As it is declared in key, all process have their own "value" copies. 20 are inserted during childhood, so 140 are written.  

In D the output is 2650, its fork() method returns the child ID to the parent process. so the value 2650 is printed.  

In E the output is 2600, Its getpid() method will returns parent process id  that is equal to 2600.  

In F the output is 120 Since the value is declared in primary, all process so their own "value" copies. 120 will be printed during process.

4 0
3 years ago
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