Parallelizing Index Creation- Tables and Constraints
In large database environments in which you are attempting to create an index on a table that is populated with...
In large database environments in which you are attempting to create an index on a table that is populated with...
When you create a B-tree index, you can also specify that the index be unique. Doing so ensures that non-NULL...
For critical applications, you must give some thought to how much space tables and indexes will consume and how fast...
Rarely do DBAs and developers accurately create the right mix of indexes when first deploying an application. And that is...
A check constraint works well for lookups when you have a short list of fairly static values, such as a...
When you implement a database, most tables you create require a primary key constraint to guarantee that every record in...
Every row in every table has an address. The address of a row is determined from a combination of the...
You can use either the DELETE statement or the TRUNCATE statement to remove records from a table. A DELETE statement...
There are a couple of reasons to rename a column. Sometimes, requirements change, and you may want to modify the...
When you are creating a table, you have the option of specifying the NOLOGGING clause. The NOLOGGING feature can greatly...