Answer:
Relational query language is the language that is used in the queries of the relational databases that has rows and columns in table. The user or client presents a request for gaining the information from the database. The relationships in the database are defined in numerous ways which creates the query.
This language can be procedural form or non-procedural form.The operations performed by this language are communication with the relational database, analyzing the relationships between the entities of database,splitting the request from client and then execution of that request is done by database management system(DBMS), etc.
Answer:
the software that manages and controls the activities and resources of the computer is OS
Explanation:
the software that manages and controls the activities and resources of the computer is OS
because here we know that CPU is hardware
and ALU is a digital circuit that is use to perform arithmetic and logic operations
and
GUI or Graphical User Interface controls the graphical interface of the applications
so here correct option is OS that is the software that manages and controls the activities and resources of the computer
#1 is A and #2 is B, but I don't know about #3 and #4.
Answer:
HVAC is stand for the heating, ventilation and the air conditioning system that basically perform various type computer management and operation system. It also helps to improve the productivity of the system.
As, HVAC system is very concerned about the security as it basically include various types of toxic chemical in the environment that include various types of criminal and terrorist activities and natural disaster.
The HVAC systems are easily cause various accidental cases due to its complexity nature. It also performing various types of function in the management sector like maintenance, system updating function an remote controlling maintenance.
Here are some of the computers used in the first generation of computers:
ENIAC
EDVAC
UNIVAC
IBM-701
IBM-650
These are some of the first computers ever that led to today's computers.
