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Answer: In a database, a key field is used to uniquely identify each record for retrieval or manipulation.
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Answer:
operating system
Explanation:
System software are those programs that many refer to as computer programs. The most basic function of system software is to manage the computer systems. It acts as an interface between the computer’s hardware and the end user. System software converts instructions that end users give to the computer into a machine understandable language. Examples of system software include operating systems, utility programs, device drivers, and windows systems. The operating system is responsible for the functioning of all the computer’s hardware parts. It is the software loaded into the system when the computer boots up. It manages everything, from the memory, to the CPU, and many other different tasks.
Answer:
Gradient fill
Explanation:
A gradient fill is a visual effect that makes a three dimensional color look by mixing one color shade gradually progressing to another shade of the same color or one color progressing to another color. for example a dark red progressively changing to light red or red progressively changing to blue.
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