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.
In 1972 Bill Gates formed Traf-O-Data.
Answer:
Answer is A: place absorbent chemical packets in the camera cover
Explanation:
Keith is required to carry adequate gear while going for a shoot. And in this case, he should carry anything that will protect his camera from the ocean and rainwater. By anything, I mean anything that Keith will use to stay dry. Using an air conditioner would be the worst idea. An air conditioner might blow the air towards your camera. Placing the camera in its case will ensure that it is dry and Keith will keep on shooting. Placing absorbent chemical packets in the camera cover will ensure that any water droplets that might fall on the cover of the camera will be absorbed. The point here is to keep dry.
