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More Computer Networks Related questions:
An open rectangle
Options: defines a source or destination of system data, identifies data flow, represents a process that transforms incoming data flow(s) into outgoing data flows, is a data store-data at rest, or a temporary repository of data
Options: describes how data are structured in the data base, specifies for the DBMS what is required; the techniques used to process data, determine how data must be structured to produce the user's view, All of the above
Options: a. Do not enter a value in the foreign key field of a child table if that value does not exist in the primary key of the parent table
b. Do not enter a value in the primary key field of child table if that value does not exist in the primary key of the parent table
c. Do not enter a value in the foreign key field of a parent table if that value does not exist in the primary key of the child table
d. All of above
Options: Â Mechanical
B. Â Electrical
C. Â Electro Magnetic
D. Â Laser
Ans:– D ,
There are certain packages that allow people to define data items, place these items in particular records, combine the records into designated files and then manipulate and retrieve the stored data. What are they called?
Options: Data storage system, Database management system (DBMS), Batch processing system, Data communication package
Which SQL Query is use to remove a table and all its data from the database?
a. Create Table
b. Alter Table
c. Drop Table
d. None of these
Options: Every primary-key value must match a primary-key value in an associated table
B. Every primary-key value must match a foreign-key value in an associated table
C. Every foreign-key value must match a primary-key value in an associated table
D. Every foreign-key value must match a foreign-key value in an associated table
Ans:– c ,
What input values will cause an AND logic gate to produce a HIGH output?
Options: At least one input is HIGH., At least one input is LOW., All inputs are HIGH., All inputs are LOW.
Options: 'c' means argument control 'v' means argument vector, 'c' means argument count 'v' means argument vertex, 'c' means argument count 'v' means argument vector, 'c' means argument configuration 'v' means argument visibility
Many large organizations have information _____ where managers can use fourth-generation languages to retrieve the facts they need from online data bases, and where staff experts are available to provide PC hardware/ software guidance.