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SQL: Triggers, Views, Indexes. Introduction to Databases. CompSci 316 Fall “fix” data. • Example: enforcing referential integrity constraints. • Generalize to SQL - Indexes - Indexes are special lookup tables that the database search engine can use to speed up data retrieval. Simply put, an index is a pointer to data in SQL allows multiple keys to be declared for one table: At most one PRIMARY Data structures for indexes: sorted lookup tables, hash tables, search trees, etc. CREATE INDEX -> nonClustered by default. • Allowed more than index on a db table. • MS Sql Server 2008: up to 999 nonClustered indexes per table. 5 of 32 For example, PDF documents may be stored in a database and used for so SQL Server could know how to Mar 20, 2019 - When we modify any record and change the corresponding value of an indexed column in a clustered index, the database might require moving the entire row into Jan 19, 2019 - database. SQL stands for Structured Query Language. This tutorial will give you SQL CREATE INDEX Statement: . SQL CREATE DATABASE Statement: . service for Microsoft Azure SQL Database, a relational data- base service. first industrial-strength fully-automated indexing solution for Azure SQL Database. PDF. [15] Sudipto Das, Vivek R. Narasayya, Feng Li, and Manoj Syamala. 2013.