Answer:
A primary key is a special relational database table column (or combination of columns) designated to uniquely identify each table record. A primary key is used as a unique identifier to quickly parse data within the table. A table cannot have more than one primary key.
Primary Key.
Candidate Key.
Alternate Key.
Super Key.
Composite Key.
Foreign Key.
Unique Key.
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. Informally, a primary key is "which attributes identify a record," and in simple cases constitute a single attribute: a unique ID.
Explanation:
A tool in administrative tools which you should open if you want to view messages to troubleshoot errors is an: b. event viewer.
<h3>What is an operating system?</h3>
An operating system (OS) can be defined as a system software that's usually pre-installed on a computing device by the manufacturers, so as to manage random access memory (RAM), software programs, computer hardware and all user processes.
<h3>What is an
event viewer?</h3>
An event viewer can be defined as an administrative tool that is found in all versions of Windows Operating System (OS) which is designed and developed to enable administrators and end users in viewing the event logs of software application and system messages such as errors on a local or remote machine.
In this context, we can reasonably infer and logically deduce that an event viewer is a tool in administrative tools which you should open if you want to view messages to troubleshoot errors.
Read more on event viewer here: brainly.com/question/14166392
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Those who use pirate software:
<span>1)Increase the chances that the software will not function correctly or will fail completely
2)Forfeit access to customer support, upgrades, technical documentation, training, and bug fixes
3)Have no warranty to protect themselves
4)Increase their risk of exposure to a debilitating virus that can destroy valuable data
5)May find that the software is actually an outdated version, a beta (test) version, or a nonfunctioning copy
6)Are subject to significant fines for copyright infringement</span>
First brock has to make sure he has all the hiking gear, like a camel back, gloves, the right pair of shoes. and then if he wants to take pictures he should buy a go-pro so he doesn't really have to move will the go-pro will record or take pictures.
hope i helped 0-0 ;p
plz mark brainly
