BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Firebird backup of multi-file databases (Newbie)          BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) View previous topic :: View next topic   Author Message KIB Guest Posted: Sun Apr 22, 2007 1:38 pm    Post subject: Firebird backup of multi-file databases (Newbie) Hello. I'm a newbie in Firebird and sql servers. So I get a bit confused when the Firebird manual on bacup issues tells me that the new tool, nbackup, for Firebird 2 does not support multi-file backup. Is there at all a database with only one file? It doesn't make sense, so I obviously is misunderstanding something here. I come from a dBase environment as a hobby programmer and there a file is a file. With dbf extension. In Firebird I discovered that a .fdb file is more than one file, in fact a multi file thing. So how is it possible to back it up if not multi file back up is allowed? :) Kai Inge Back to top Don Guest Posted: Sun Apr 22, 2007 7:12 pm    Post subject: Re: Firebird backup of multi-file databases (Newbie) Quote: I'm a newbie in Firebird and sql servers. So I get a bit confused when the Firebird manual on bacup issues tells me that the new tool, nbackup, for Firebird 2 does not support multi-file backup. Is there at all a database with only one file? I come from a dBase environment as a hobby programmer and there a file is a file. With dbf extension. In Firebird I discovered that a .fdb file is more than one file, in fact a multi file thing. So how is it possible to back it up if not multi file back up is allowed? The dBase .DBF file is the same thing as a table in Firebird. Firebird tables (the equivalent of the .DBF file) are created and stored in a single database file (.fdb) by default. You can optionally allocate additional files for page storage using the CREATE DATABASE statement. This is the feature that nbackup does not support. I believe you're just confused by the .DBF table vs. Firebird database concepts. Tables are not files in Firebird. Back to top KIB Guest Posted: Sun Apr 22, 2007 7:38 pm    Post subject: Re: Firebird backup of multi-file databases (Newbie) On 22 Apr, 16:12, "Don" <mudsh...@joesgarage.org> wrote: Quote: I'm a newbie in Firebird and sql servers. So I get a bit confused when the Firebird manual on bacup issues tells me that the new tool, nbackup, for Firebird 2 does not support multi-file backup. Is there at all a database with only one file? I come from a dBase environment as a hobby programmer and there a file is a file. With dbf extension. In Firebird I discovered that a .fdb file is more than one file, in fact a multi file thing. So how is it possible to back it up if not multi file back up is allowed? The dBase .DBF file is the same thing as a table in Firebird. Firebird tables (the equivalent of the .DBF file) are created and stored in a single database file (.fdb) by default. You can optionally allocate additional files for page storage using the CREATE DATABASE statement. This is the feature that nbackup does not support. I believe you're just confused by the .DBF table vs. Firebird database concepts. Tables are not files in Firebird. Thank You for the answer. Then I understand. the file issue. Page Storage, what is that? :) Kai Inge Back to top Wayne Niddery [TeamB] Guest Posted: Sun Apr 22, 2007 8:17 pm    Post subject: Re: Firebird backup of multi-file databases (Newbie) KIB wrote: Quote: Page Storage, what is that? An allocation unit for storage. Typically a page is 4 or 8K in size, and the database allocates space in pages for storing records and indexes. The multifile issue, while still supported by the database itself (both Firebird and InterBase), is more historical. InterBase has been around for over 20 years and originally, a single physical file could not be more than 2 gig in size, therefore to have larger databases, they had to allow for multiple physical files. Once allocated, you did not have to worry about different files when connecting to or accessing records in the database, the database server took care of that transparently. To allocate multiple files, you would tell the database how many pages it can use before it must start writing to the next physical file. With later versions (both for the database and the O/S) however, the physical size of a single database can go much larger - terrabytes, so multiple physical files for the same database are no longer really needed. -- Wayne Niddery - Winwright, Inc (www.winwright.ca) Working for yourself is great because you get to work half days, and you can choose any twelve hours you want. Back to top KIB Guest Posted: Mon Apr 23, 2007 8:11 am    Post subject: Re: Firebird backup of multi-file databases (Newbie) On 22 Apr, 17:17, "Wayne Niddery [TeamB]" <wnidd...@chaffaci.on.ca> wrote: Quote: KIB wrote: Page Storage, what is that? An allocation unit for storage. Typically a page is 4 or 8K in size, and the database allocates space in pages for storing records and indexes. The multifile issue, while still supported by the database itself (both Firebird and InterBase), is more historical. InterBase has been around for over 20 years and originally, a single physical file could not be more than 2 gig in size, therefore to have larger databases, they had to allow for multiple physical files. Once allocated, you did not have to worry about different files when connecting to or accessing records in the database, the database server took care of that transparently. To allocate multiple files, you would tell the database how many pages it can use before it must start writing to the next physical file. With later versions (both for the database and the O/S) however, the physical size of a single database can go much larger - terrabytes, so multiple physical files for the same database are no longer really needed. -- Wayne Niddery - Winwright, Inc (www.winwright.ca) Working for yourself is great because you get to work half days, and you can choose any twelve hours you want. Thank you very much. I enjoy learning new things, and people found in theese Delphi groups are the best teachers Thanks again. :) Kai Inge Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.