Just a few lines on what cache coherency is like, please.
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Just a few lines on what cache coherency is like, please.
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- It is known that the customer tables are initially stored on a centralized database server. To increase efficiency in access and operational costs, the database was made distributed in several branch areas. An example of a customer table looks like this: a. There are several types of fragmentation, explain! What type do you use if you do fragmentation of the table above? Explain how the fragmentation is done and give reasons why choosing this type!b. Describe how the fragmented table will look like and describe it according to 3 rules (completeness, reconstruction, disjointness).How does the Two-Phase Commit (2PC) protocol work in a distributed database system, and what are its limitations?Your database uses a slotted page architecture. Each page is 4096 bytes and has a page header of 96 bytes, and each slot pointer in the page needs 2 bytes. Assuming an average record length of 100 bytes, estimate the number of pages required to store 10000 records, stating any assumptions and showing your calculation.