Answer:
The expression is :
π[cd) + π(g,h) ],[π(e,f)+π(a,b)])
We will use foreign key and primary key
Answer:
Tier 1 support
Explanation:
Of the given options, tier 1 support technical group is the least experienced group. This group of technicians is also referred to as level 1 technical group.
The tier 1 or level support are made up of junior technician, and they have few technical understandings.
Their roles include email response and basic troubleshooting, attending to phone calls, among others.
When a problem cannot be solved by tier 1 support technicians, they pass the problem to tier 2 support technicians,
Answer:
Downloadable
Explanation:
Cloud computing can be defined as a type of computing that requires shared computing resources such as cloud storage (data storage), servers, computer power, and software over the internet rather than local servers and hard drives.
Generally, cloud computing offers individuals and businesses a fast, effective and efficient way of providing services.
In Computer science, a downloadable media must first be downloaded in its entirety and saved to a user's computer before it can be played, heard or seen.
For example, for an end user to listen to a song hosted on a particular website, he or she must first of all download the song in its entirety and have saved on a computer system before it can be seen, played and listened to. Also, other downloadable media such as videos, animations, texts, etc., must be downloaded before they can be accessed or used by an end user.
