Answer:
Explanation:
Duplicate tuples are not allowed in a relation because the specifications of the constraints of the regional integrity are violated, especially the main constraint that states that there can be no identical values for the attributes of two tuples at any database relation state.
Also, duplicate tuples are not allowed in a relation due to the fact that they lead to redundancy of the data base which in turn, slowing down the speed of the database when data processing such as inserting, querying, updating, deleting, etc are being performed.
We need more information for this one, please.
Im going to guess the 2nd one.
The 1st one just shows how trees can make ____ and then goes to water, the sun, then the rain but it CAN be used as one.
The 2nd one seems to explain the best it can show about weather, water, landforms, the sun, and seems like a better one to choose.
Computer files containing nothing but printable characters are called text files<span>.</span>