Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records. The disk space required to store the index is typically less ...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records. The disk space required to store the index is typically less than that required by the table, yielding the possibility to store indices in memory for a table whose data is too large to store in memory.
Overview