If you have access to MySQL 5.7, search its help system to answer the following questions.A. How does MySQL 5.7 use read locks and write locks?B. What, if any, levels of transaction isolation are available in MySQL 5.7?C. What types of cursors, if any, does MySQL 5.7 use?D. How does the security model for MySQL 5.7 differ from that shown in Figure 6-16?E. Summarize the backup capabilities of MySQL 5.7.F. Summarize the recovery capabilities of MySQL 5.7.

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A: answer is

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Q: What is the "write-ahead logging (WAL)" technique, and how does it benefit transaction processing?

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Q: How does a "dirty read" differ from a "non-repeatable read" in terms of transaction anomalies?

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Q: What distinguishes a homogeneous DDBMS from a heterogeneous DDBMS? Which one is trickier?

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Q: How does a DDBMS stand out from a heterogeneous DDBMS? What might be harder than that?

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Q: Consider airline database "snapshot isolation." If airlines can increase performance, is a…

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Q: What role do "keep-alive" packets play in persistent database connections?

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