dota. Dota is a custom map for warcraft III, the most popular version being DotA Allstars, which is for Warcraft III: The Frozen Throne. DotA is a generally exciting game, with many comebacks, twists and turns.
Some of you may be familiar with relational databases other than Teradata and how those other RDBMs utilize indexes. In Teradata, an âIndexâ is a physical mechanism that is used to distribute, store, and access data rows. Indexes provide a physical access path to the data and their use can avoid unnecessary full-table scans to locate rows.
When you define a PRIMARY KEY on your table, InnoDB uses it as the clustered index. Define a primary key for each table that you create. If there is no logical unique and non-null column or set of columns, add a new auto-increment column, whose values are filled in automatically. If you do not define a PRIMARY KEY for your table, MySQL locates the first UNIQUE index where all the key columns are NOT NULL and InnoDB uses it as the clustered index.