Comparison of relational database management systems. The following tables compare general and technical information for a number of relational database management systems. Please see the individual products' articles for further information. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add- ons, extensions or external programs.
General information. Richard Hipp. 20. Version 1. 9 adds serializable isolation and version 2.
- Database management made portable. Database Browser Portable is an easy to use tool allows you to connect to any database and browse or modify data, run sql scripts.
- Date: Time: 12:30:34 Remote User: Comments. It never rains but it pours, http:// rutland northeast supervisory union, ruzi.
ACID compliant. Note (2): My. SQL provides ACID compliance through the default Inno. DB storage engine. The CHECK clause is parsed but ignored by all storage engines.? This limit applies to number of characters in names, rows per table, columns per table, and characters per CHAR/VARCHAR. Note (9): Despite the lack of a date datatype, SQLite does include date and time functions. DATETIME date range is 0.
Search in more than 3000 authors, 6000 products, 7000 files. Utilitários é uma categoria de downloads do TechTudo destinada a programas que otimizam os aparelhos e facilitam a vida dos usuários.
DbForge SQL Complete is an add-in for SQL Server Management Studio and Visual Studio that speeds up SQL code writing, offers context-based smart suggestions.
Note (1. 1): Since version 1. Earlier versions support up to 4. B. Note (1. 2): The 1. PB limit refers to the storage limit of a single Informix server instance.
Informix v. 12. 1. A distributed Informix database has no upper limit on table or database size. Tables and views. The term is defined in the Informix Performance Guide. External routine refers to the one written in the host languages, such as C, Java, Cobol, etc. However, its definition varies between different database vendors.
Note (2): In Derby, H2, Lucid. DB, and CUBRID, users code functions and procedures in Java. Note (3): ENUM datatype exists. CHECK clause is parsed, but not enforced in runtime.
Note (4): In Drizzle the user codes functions and procedures in C++. Note (5): Informix supports external functions written in Java, C, & C++. Partitioning. Optional)No. No. No. No. Yes. Yes 1. Yes. Yes 1. 3No? Postgre. SQLYes. Yes (for 9. Yes (LDAP, Kerberos?
Precise if option is default, included option or an extra modules to buy. Note (2): Options are present to set a minimum size for password, respect complexity like presence of numbers or special characters. Note (3): How do you get security updates? Is it free access, do you need a login or to pay?
Is there easy access through a Web/FTP portal or RSS feed or only through offline access (mail CD- ROM, phone). Note (4): Does database process run as root/administrator or unprivileged user? What is default configuration? Note (5): Is there a separate user to manage special operation like backup (only dump/restore permissions), security officer (audit), administrator (add user/create database), etc.? Is it default or optional?
Note (6): Common Criteria certified product list. There are no separate roles for backup operator and security administrator. Note (8): User can define a dedicated backup user but nothing particular in default install. By default uses OS authentication. Note (1. 1): Authentication methods. To compound this confusion the functionality can, when incorrectly implemented, overlap with that of the parent- database. An SQL schema is simply a namespace within a database, things within this namespace are addressed using the member operator dot .
This seems to be a universal amongst all of the implementations. A true fully (database, schema, and table) qualified query is exemplified as such: SELECT * FROM database. Now, the issue, both a schema and a database can be used to isolate one table, . The following is pseudo code: SELECT * FROM db. SELECT * FROM db. SELECT * FROM . SELECT * FROM .
In this context, My. SQL databases are analogous in function to Postgres- schemas, insomuch as Postgres lacks off- the- shelf cross- database functionality that My. SQL has. Conversely, Postgre. SQL has applied more of the specification implementing cross- table, cross- schema, and then left room for future cross- database functionality. My. SQL aliases schema with database behind the scenes, such that CREATE SCHEMA and CREATE DATABASE are analogs.
It can therefore be said that My. SQL has implemented cross- database functionality, skipped schema functionality entirely, and provided similar functionality into their implementation of a database. In summary, Postgres fully supports schemas but lacks some functionality My. SQL has with databases, while My. SQL does not even attempt to support true schemas. Oracle has its own spin where creating a user is synonymous with creating a schema.
Thus a database administrator can create a user called PROJECT and then create a table PROJECT. TABLE. Users can exist without schema objects, but an object is always associated with an owner (though that owner may not have privileges to connect to the database).
With the Oracle 'shared- everything' RAC architecture, the same database can be opened by multiple servers concurrently. This is independent of replication, which can also be used, whereby the data is copied for use by different server.
In the Oracle view, the 'database' is a set of files which contains the data while the 'instance' is a set of processes (and memory) through which a database is accessed. Informix supports multiple databases in a server instance, like My. SQL. It supports the CREATE SCHEMA syntax as a way to group DDL statements into a single unit creating all objects created as a part of the schema as a single owner. Informix supports a database mode called ANSI mode which supports creating objects with the same name but owned by different users. The end result is confusion between the database factions.
The Postgres and Oracle communities maintain that one database is all that is needed for one project, per the definition of database. My. SQL and Informix proponents maintain that schemas have no legitimate purpose when the functionality can be achieved with databases.
Postgres adheres to the SQL specification, in a more intuitive fashion (bottom- up), while My. SQL's pragmatic counterargument allows their users to get the job done while creating conceptual confusion. Postgre. SQL and some other databases have recently added support for foreign schemas, the ability to import schemas from other servers, as defined in ISO/IEC 9. SQL: 2. 00. 8). This appears like any other schema in the database according to the SQL specification while accessing data stored either in a different database or a different server instance. The import can be made either as an entire foreign schema or merely certain tables belonging to that foreign schema. Retrieved 2. 01. 6- 1.
Annals of the History of Computing. ISSN 1. 05. 8- 6. Retrieved 2. 01. 4- 0. Chicago Public Schools Gifted Programs Testing For Ms here. Retrieved 2. 01. 7- 0.
Retrieved 4 May 2. Retrieved 8 November 2. The Postgre. SQL Global Development Group. Retrieved 2. 01. 7- 0. Ask. Monty Knowledge.
Base. Retrieved September 3. Maria. DB Knowledge. Base. Retrieved 2. September 2. 01. 4. Retrieved 2. 5 April 2. Retrieved 2. 5 April 2.
Microsoft SQL Server 2. A Beginner's Guide. Mc. Graw- Hill Professional. ISBN 9. 78- 0- 0. Retrieved 2. 5 April 2. File. Maker=May 1. Firebird Project.
Retrieved April 1. Publications. Retrieved August 7, 2. Retrieved 2. 5 April 2. Firebird Project. Retrieved April 1. Retrieved 9 December 2.
Retrieved 9 December 2. Retrieved 2. 5 April 2.
Retrieved 2. 01. 6- 0.
List of File Extensions and Data Formats. Main » Quick Reference ». Updated January 1. Posted September 3. By - Webopedia Staff. Webopedia's list of Data File Formats and File Extensions makes it easy to look through thousands of extensions and file formats to find what you need. With literally thousands of data file formats employed by Windows and Window- based apps, keeping track of all the file extensions used by software applications and programs can be a challenge.
Webopedia's List of Data File Formats and File Extensions. Fortunately, Webopedia's Complete List of Data File Formats and File Extensions makes it quick and easy to sift through thousands of file extensions and data file formats to find exactly what you need. You can peruse the full list or search for data formats and file extensions based on the letter they start with from the table below. Pipe file (DOS). 0. Pipe file (DOS). 2. Language Kit. btr. Btrieve Database file.
MS Frontpage- related file. DB/Text. Works Database Term & Indexes. Quicken Backup. bug. Bugs and Problems. Bundled Audio files. DVD Backup file. but. Button definitions (Buttons!).
Datafile format (movie). Overflow file below insert point in Doc 1 (Word.
Perfect for Win). Overflow file below insert point in Doc 2 (Word. Perfect for Win). Overflow file below insert point in Doc 3 (Word. Perfect for Win). Overflow file below insert point in Doc 4 (Word.
Perfect for Win). Overflow file below insert point in Doc 5 (Word. Perfect for Win). Overflow file below insert point in Doc 6 (Word.
Perfect for Win). Overflow file below insert point in Doc 7 (Word. Perfect for Win). Overflow file below insert point in Doc 8 (Word. Perfect for Win). Overflow file below insert point in Doc 9 (Word.
Perfect for Win). Blind. Write Disk Image Information file. Spreadsheet application (Visual Baler). Blindread/Blindwrite. Beware (buglist) (Kermit). Blindwrite Sub Channel Data File.
Blindread/Blindwrite. Contact. bz. 2Bzip 2 UNIX Compressed file. C source code file. Compressed unix file archive created by COMPACT. C++ source code file. Source code (Sphinx C- -). Print file (Ventura Publisher)Win.
Ace Split Archive file. Genesis 2. 00. 0. Win. On. CD CD Image. MAXON Cinema 4. D File (Graphics). Midtronics Battery Management Software. C source code file (Computer Innovation C8.
Initial cache data for root domain servers (Telnet). Cabinet File (Microsoft installation archive). Cache file (typically Web cache). Softdesk Drafix CAD File. BASE IV executable when caching on/off (see cachedb. Document (Drafix Windows CAD).
MS Clip Gallery Catalog file. Calendar file (Windows 3. Calendar Maker Pro. Coolect Album file (Coolect Album Player)Spreatsheet (Super. Calc). cam. Casio Camera Graphic. Fax (Navigator Fax). Caption (Ventura Publisher)Session capture file (Telix).
At. Home Assistant file. Carrara Environment. Neo. Book Cartoon. Comma- delimited ASCII File.
Catalog (d. BASE IV). Clean Boot File (Microsoft)Brief Macro Source Code.
Fuzzy logic system (Cubi. Calc). cbf. Calendar Builder file. Cobol source code file.
Compiled bitmap graphics (XLib). Central. Builder Project.
Comic. Book Reader File archive (CDisplay image viewer). Computer Based Training (many). Comic. Book Reader File archive (CDisplay image viewer).
C++ source code file. CC: Mail archive file. Visual Basic Animated Button Configuration. Bitmap graphics (native format) (Curtain Call). Clone. CD Related file. Vector CAD Program file.
Calendar Creator 2 Event file. Communications configuration file (Symphony). Chart (Corel. Chart). Communication Command Language file (Intalk). Btx Graphics file (XBTX). Macromedia Director Shockwave file. Corel Print. House file.
CD Audio Track. cdb. Card database (Card. Scan)Main database (TCU Turbo C Utilities). Concept. Draw Document file. Honeywell Hybrid Control Designer. Component Definition file.
Graphics (netcdf). Compact Disc Plus Graphics file.
Phillips Compact Disk Interactive format. Disc. Juggler Image file. Document (Atari Calamus).
Case. Ware Working Papers Document Link. Sign. Lab Vector Graphic. Media Maker Disk Image file. Visual d. BASE Custom Data Module. Visual Objects Developer file. CD/Spectrum Pro. cdr. Vector graphics (Corel.
DRAW native format). Data (Corel. Draw 4. Corel. Draw Compressed Image file. Compound index (Fox. Pro). ce. Main. ce (The Far. Side Computer Calendar). Apabi e. Book file.
Bitmap graphics (Tempra Show - Edsun Continuous Edge Graphics). Graphics (Autodesk Animator - Lumena). Sendmail Configuration file. Configuration file (imake). Comptons multimedia file. Macromedia Coldfusion component extension. Configuration. cfl.
Chart (Corel. FLOW). Cold. Fusion Markup Language (Allaire). Font data (Atari Calamus). C Form Object internal format object file (TCU Turbo C Utilities). Quicken Cash Flow Projection file. Fax (The Complete Fax Portable). Crossfire Replay file.
CGA display font (Ventura Publisher). Cricket Graph Data file. CCD Astrocamera. cgi. Common Gateway Interface script. Computer Graphics Metafile vector graphics (A& L - HG - many).
Header file (Clipper 5). Chart (Harvard Graphics 3. Presentation (Charisma 4. Font descriptor (Font.
Chameleon). chi. Document (Chi. Writer). chk. Recovered data (Chk. Dsk)Temporary file (Word. Perfect for Win). Configuration History Log. Compiled HTML. chn. Data (Ethnograph 3).
Chord. Pro file. chp. Chapter file (Ventura Publisher). Character set (Turbo C - Turbo Pascal).
Chart (Harvard Graphics 2. Soft. Craft Presenter)Interface file for Chart. Master (d. BASE). Compiled Help Index file.
Analog. X Caller ID file. Caltech Intermediate Format graphics. Chapter information (Ventura Publisher). Canon CIFF. cil. Clip Gallery Download Package. Intergraph Raster File Reference.
Database index (TCU Turbo C Utilities). Keyboard mapping (Borland C++ 4. Common LISP source code file. Easy CD Creator Layout file. Easy CD Creator Layout file. Easy CD Creator Layout file.
Java class file. clb. ICQ Contact List.
MS Office XP Developer Code Librariancdr. Label Compact Disc Label. Windows Catalog file. Client Management System Customer file. COLIMO file. clp. Clip art graphics (Quattro Pro)Clipboard file (Windows 3.
Compiler script file (clip list) (Clipper 5). Blue- ray Disc Clip Information file. Color binary screen image (1st Reader)Color definitions (Photostyler). C++ class definition file.
Data file (Craft. Man). cmd. Batch file (OS/2)Command (d. BASE - Waffle)External command menu (1st Reader). FM- music file (Creative Music File). CMG file. cmk. Card (Card Shop Plus). COMAL programming language. Cmm script (batch) file (CEnvi).
Virtools Composition file. Header file for Post. Script printer files (Corel.
DRAW)User dictionary (MS Word for DOS)Bitmap graphics (Lead CMP compression). Culturemetrics file. Culturemetrics file. Trial. Director media storage. Animation (Corel. Move Corel. Draw 4.
Corel Photo. Paint Image. Corel Presentation Exchange Image. The Sims (Maxis) 3. D Body Mesh Data. Apple Viewer file.
CNC general program data. Control. Draw file. Embroidery Design file. Configuration (program - printer setup). Helpfile contents. Data conversion support file (Word for Windows)Temporary file (Word. Perfect for Win).
Cobol source code file. Datafile (Forecast Plus - MS Multiplan - Stat. Pac Gold)Program compiled code (FORTRAN)Template source file (d. BASE Application Generator)Videotext file. Color palette (Autodesk Animator - many)Spreadsheet (MS Multiplan). Command (memory image of executable program) (DOS).
Configuration file (Simdir). Configuration file. Configuration file. Protein Structure file. Web GPS Correction Server Export file. WMOVIEC Input file.
Script (Complaints Desk). MS Fax Cover Sheet. Fax (The Complete Fax)Clever Cache Profile file.
Corel Print House image. Code Page Information file (DOS)AVCHD Clip Information. Colorlab Processed Image bitmap graphics. Control panel file (Windows 3.
Presentation (Compel). Corel Print House file. C++ source code file. Presentation (CA- Cricket Presents). Cubase Project file. Backup of startup files by Central Point PC Tools autoexec.
Compressed Mac file archive created by COMPACT PRO (ext- pc. Corel Photo- Paint Image. Encrypted memo file (d.