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Oracle Locking Survival Guide

In multi-user systems, many users may update the same information at the same time. Locking allows only one user to update a particular data block; another person cannot modify the same data. The basic idea of locking is that when a user modifies data through a transaction, that data is locked by

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Temporal Functionality

Many changes have been made to temporal – DATE, TIME, DATETIME, and TIMESTAMP – functions in MySQL 4.1. This includes support for microseconds and time zones. In this article, a time value is one of either: TIME, DATETIME, or TIMESTAMP. A date value is one of either: DATE, DATETIME, or TIMESTAMP.

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Storage Engine (Table Types)

This chapter covers the MySQL architecture, locking and concurrency, and transactions. It also discusses how to select the right engine and looks at each of MySQL’s storage engines in detail. (From the book High Performance MYSQL: Optimization, Backups, Replication and Load Balancing, by Jeremy Zawo