Consider the following part of an ERD of Hotel Reservation System. Guest PK Guest Name Contact No Address Reservation PK Reservation No + CheckinDate Checkin Time CheckOutDate CheckOutTime Room PK RoomID Room Type Availability Status BMI PK BillID RoomCharges Service Charges TotalCharges Table Collapsing and Pre-Joining are two important techniques of de-normalization. You are required to perform following tasks: Task 1: Identify all such relations from above given ERD on which Table Collapsing technique can be applied. After that apply table collapsing techniques on tables having such relationships. Task 2: Identify all such relations from above given ERD on which Pre-joining technique can be applied. After that apply pre-joining techniques on tables having such relationships

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Through the process of sedimentation,sediment is turned back to rock to form sedimentation.the process of sedimentation is: > deposition-where fragments were deposited into the river or sea under gravity or travelling agent such as wind or water. > sedimentation-the fragments deposited in the river sedimented and accumulate> compaction-the layers of fragments deposited undergoes compaction due to the weight if the upper layers> cementation-chemical substance of the fragments such as cement dissolved into the water and cement the other fragments together to form sedimentary rock.thus,cementation and compaction are the process.on the other hand, transformation only occur when a rock under goes metamorphism(compaction or extreme heat).while recrystillization occurs when a rock is melted and cooled down,which also requires metamorphism to take place.hope it !