BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Locks and Cursors          BorlandTalk.com Forum Index -> Delphi Databases (ADO) View previous topic :: View next topic   Author Message Randi White Guest Posted: Thu Feb 19, 2004 4:40 am    Post subject: Locks and Cursors I am trying to convert a D5 BDE Paradox app to my first D5 ADO SQL 2000 app. I may have several users trying to access the same record simultaneously I am missing the functionality that the BDE offers up front when a record is locked ie 'record is locked' BEFORE users start editing. Looking at the MDAC SDK I interpret that I need to set pessimistic lock and dynamic cursor type for 'locking up front' but when I attempt to do that and open the table or query , the IDE sets the cursor TYPE back static on me and the lock to batch optimistic. If I set the cursor LOCATION to server with pessimistic and dynamic I get error "Dataset does not support bookmarks which are required for multi-record data controls." If someone shed some light on how to achieve the desired results, it would be greatly appreciated. Thanks in advance Back to top Kevin Frevert Guest Posted: Thu Feb 19, 2004 11:02 am    Post subject: Re: Locks and Cursors Randi, Locking in MSSQL (or most RDBMSs) is very different than Paradox (far too much to get into here). MSSQL's Books Online has some good information on it's locking mechanism. To help avoid common pitfalls with converting desktop db apps... http://bdn.borland.com/article/0,1410,28160,00.html Other misc stuff... http://www.hower.org/Kudzu/Articles/DBDesign/index.html http://bdn.borland.com/article/0,1410,27790,00.html Good luck, krf "Randi White" <rwhite (AT) nsaero (DOT) com> wrote Quote: I am trying to convert a D5 BDE Paradox app to my first D5 ADO SQL 2000 app. I may have several users trying to access the same record simultaneously I am missing the functionality that the BDE offers up front when a record is locked ie 'record is locked' BEFORE users start editing. Looking at the MDAC SDK I interpret that I need to set pessimistic lock and dynamic cursor type for 'locking up front' but when I attempt to do that and open the table or query , the IDE sets the cursor TYPE back static on me and the lock to batch optimistic. If I set the cursor LOCATION to server with pessimistic and dynamic I get error "Dataset does not support bookmarks which are required for multi-record data controls." If someone shed some light on how to achieve the desired results, it would be greatly appreciated. Thanks in advance 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 (ADO) 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.