en.wikipedia.org/wiki/Database_index A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table ...
stackoverflow.com/questions/1108 Given that indexing is so important as your dataset increases in size, can someone explain how indexing works at a database agnostic level? For information on queries to index a field, check out
docs.oracle.com/cd/B28359_01/appdev.111/b28424/adfns... Create a New Temporary Table Space Before Creating Indexes. When you create an index on a table that already has data, Oracle Database must use sort space to create the index.
www.interspire.com/.../15/introduction-to-database-indexes Put simply, database indexes help speed up retrieval of data. The other great benefit of indexes is that your server doesn’t have to work as hard to get the data.
www.programmerinterview.com/index.php/database-sql/what... How do database indexes work? And, how do indexes help? Provide a tutorial on database indexes. Let’s start out our tutorial and explanation of why you would need a database index by going through a very simple example.
www.db2go.com/.../an-introduction-to-database-indexing.html An Introduction to Database Indexing Databases are excellent data storage and retrieval tools, ranging from simplistic tables of information to complex, intricate collections of multiple linked databases.
stackoverflow.com/.../15232403/what-is-a-database-index I've heard them talked about since I started working in tech about 18 months ago. I know that they potentially improve performance, and they seem to be column specific -- ("We index the User table...
www.databaseguides.com/what-are-database-indexes The database index is defined as a database structure whose primary function is to make the operations on a database table faster. Creating a database index requires one or a number of columns on a table for faster accessing of records in a database.
databases.aspfaq.com/database/should-i-index-my-database... An index is like a set of pointers to specific rows in a table. These pointers are ordered in terms of the column(s) defined by the index, which makes SQL's scans much more efficient - they just look up the pointers to the rows with the relevant data (based on a WHERE or other clause), and jump ...
www.windowsnetworking.com/kbase/WindowsTips/Windows7/... The indexing database in Windows hosts contains a mapping of all of the files within the operating systems reach and where they are located on disk so that they may be searched and accessed faster.
www.databasecompare.com/What-is-index-(database).html We can use index to accessÂ the specific information quickly in database table. In database, index is a data structure, which orders data of one or more columns in database table.
www.apress.com/9781430237358 Expert Indexing in Oracle Database 11g is a practical guide to indices and their uses, helping you master the most fundamental performance optimization structure in Oracle Database.
blog.teamgrowth.net/index.php/database/database-indexing... Indexes are database objects associated with database tables and created to speed up access to data within the tables. Indexes are part of constraint mechanism.
www.databasejournal.com/features/mssql/article.php/... The creation of database indexes is the last thing developers and database designers think about--almost an afterthought. Greg Larsen shows you some of the dos and don'ts of indexing to help you pick reasonable indexes at design time.
https://answers.yahoo.com/question/index?qid=... A database is a collection of records. They may, or may not, be in any type of order. Now, if you decide you want to look up someone by last name you could sort the entire database on the last name.
www.amazon.com/Expert-Indexing-Oracle-Database-11g/dp/... Expert Indexing in Oracle Database 11g is about the one database structure at the heart of almost all performance concerns: the index. Database system performance is one of the top concerns in information technology today.
www.tek-tips.com/faqs.cfm?fid=1752 An index helps Microsoft Access find and sort records faster. Microsoft Access uses indexes in a table as you use an index in a book: to find data, it looks up the location of the data in the index.
https://www.simple-talk.com/sql/learn-sql-server/... If you’re using the AdventureWorks sample database in SQL Server 2005, simply change the name of the database in the USE statement. To implement full-text indexing in SQL Server, you should take the following steps:
www.codeproject.com/Articles/19540/Microsoft-Indexing... This article describes how to provide full text search using Microsoft Indexing Service in .NET applications.; Author: Ilya Verbitskiy; Updated: 10 Jul 2007; Section: Database; Chapter: Database; Updated: 10 Jul 2007
www.codeproject.com/Articles/234399/Database-performance... In this first part of series of articles about database performance optimization I will discuss about indexing strategies and index maintenance.
www.mssqltips.com/sqlservertip/1367 Problem. One of the main functions of a DBA is to maintain database indexes. There have been several tips written about different commands to use for both index rebuilds and index defrags as well as the differences between index maintenance with SQL Server.
support.microsoft.com/kb/2820817 Describes an issue in which Exchange Server 2010 database "Content index state" counter never progresses beyond "crawling." In this situation, event IDs 102 and 5617 are logged in the Application log.
www.quora.com/What-is-meant-by-indexing-a-database-field In many databases, there is a performance optimizing feature called an "index". It is a per-table feature, there can be more than one per table, and may apply to more than one column (but usually a single one).
www.databasejournal.com/features/mysql/article.php/1382791 Featured Database Articles. MySQL. Posted Nov 26, 2001 Optimizing MySQL: Queries and Indexes. By Ian Gilfillan. ... A MySQL index is a separate file that is sorted, and contains only the field/s you're interested in sorting on.
en.wikipedia.org/wiki/Bitmap_index A bitmap index is a special kind of database index that uses bitmaps. Bitmap indexes have traditionally been considered to work well for low-cardinality columns, which have a modest number of distinct values, either absolutely, or relative to the number of records that contain the data.
www.commitcrm.com/wiki/KB:_Database_Errors,_Indexing_Errors Sometimes the database indexes that govern search results from the database can be corrupted for several reasons, ... This process is considered safe to run in order to correct suspected database indexing errors.
www.amazon.com/Advanced-Database-Indexing-Advances... Advanced Database Indexing begins by introducing basic material on storage media, including magnetic disks, RAID systems and tertiary storage such as optical disk and tapes.
www.w3schools.com/sql/sql_drop.asp Indexes, tables, and databases can easily be deleted/removed with the DROP statement. The DROP INDEX Statement. The DROP INDEX statement is used to delete an index in a table. DROP INDEX Syntax for MS Access:
sqlmag.com/database-performance-tuning/indexing-sort... The right index can dramatically improve SQL Server's sort performance. Defining a clustered index on a sort column, for example, forces the database to store data in sorted order, letting you retrieve data without additional sorting.
www.answers.com/Q/Advantages_of_using_indexes_in_database Advantages of an index over no index If no index exists on a table, a table scan must be performed for each table referenced in a database query.
www.sqlshack.com/poor-database-indexing-sql-query... This article explains what poor indexing is, and gives general recommendations for table indexing, and selecting the right columns to create indexes on
kellabyte.com/2013/03/05/using-bitmap-indexes-in-databases Types of data. Bitmap indexes do well at indexing categorial data with well defined values like countries, dates and ages as a few examples. Bitmap indexes don’t do well with numerical data with continuous values like prices or kilometres per hour that you may want to sum or average.
www.endyourif.com/the-importance-of-database-indexing The Importance of Database Indexing. Published on Feb 27, 2009 by Jamie Munro. If you are not familiar with database indexes or even if you are, but not sure when to use them, this article will be perfect for you.
https://www.howtoforge.com/when-to-use-indexes-in-mysql... When To Use Indexes In MySQL. This comes up in discussions almost every new project I work on, because it's a very important thing to consider when designing a database.
support.microsoft.com/en-us/kb/2807668 Symptom 1 The state of Microsoft Exchange Server 2013 content indexes is displayed as "Failed" by Get-MailboxDatabaseCopyStatus , and the associated error message indicates an internal error that occurs with the database or its index (Refer the...
alvinalexander.com/blog/post/mysql/how-to-create-mysql... MySQL FAQ: How do I create a MySQL database table index? Here's an example of how to create an index on a MySQL database table. In this particular example my table uses the MySQL InnoDB database engine, but that doesn't matter too much -- it just happens to be a MySQL database engine that ...
wordpress.org/support/topic/indexing-the-database Indexing is adding an index key to the tables so that the database can search faster. MichaelH Member Posted 7 years ago # Who is your host? Did they say what database table specifically they recommend indexing?
www.sqlskills.com/blogs/paul/more-on-database-mirroring... There’s been some discussion over on the SQL Server Central forums about database mirroring performance, and one question in particular on how to do index rebuilds on mirrored VLDBs.
www.jri-poland.org/jriplweb.htm Records available via search above do not include records less than 100 years old. Surviving records less than 100 years old are normally held in the Civil Records Offices (Urzad Stanu Cywilnego) of each town.