jet rdo

is used locally, it is recommended to use this access method---the specificity of the applicationRDO(Remote Data Objects)In 1995, RDO was an ODBC-based, object-oriented data access interface that, combined with an easy-to-use DAO style, provided an interface that formally demonstrated the underlying functionality and flexibility of all ODBC. Although RDO is constrained in accessing the

access method---the specificity of the applicationRDO(Remote Data Objects)In 1995, RDO was an ODBC-based, object-oriented data access interface that, combined with an easy-to-use DAO style, provided an interface that formally demonstrated the underlying functionality and flexibility of all ODBC. Although RDO is constrained in accessing the Jet or ISAM database w

access method---the specificity of the applicationRDO(Remote Data Objects)In 1995, RDO was an ODBC-based, object-oriented data access interface that, combined with an easy-to-use DAO style, provided an interface that formally demonstrated the underlying functionality and flexibility of all ODBC. Although RDO is constrained in accessing the Jet or ISAM database w

ODBC, and when the database needs to be changed, only the driver can be changed. DAO At the end of 1992, DAO1.0 released. A DAO (data access object) that accesses objects. DAO can be used to access the Jet database engine databases (Microsoft access) and to access all ODBC-enabled databases. The first to support Microsoft Access. The final version is DAO3.6 and is no longer supported on 64-bit operating systems and 2013 in Microsoft Access.

default value (the "DefaultValue" property), and whether the field can be empty (the "Required Wait10.Group Objects and User objectsThe user object represents one of the users of the database, and the group object contains a set of users with the same permissions. You can use these two objects to manage the users of your database. Here is a function to create a user, and you must have the right to create a user when you use this function.ODBCDirect is a technology that allows you to operate an

access databases. Although it is very effective to access the database quickly, when accessing a non-Access Database (such as SQL Server and Oracle), the jet engine will access the database through ODBC (as shown in ). Therefore, Dao is slow when accessing databases other than access. To overcome this defect, Microsoft has designed the rdo (Remote Data Objects) interface. Similar to Dao,

through the Dao/jet feature, and the remote RDO function can be achieved using the Dao/odbcdirect feature. Using DAO's program encoding is very simple, DAO provides a rich set of result sets for cursors (Cursor) and a result set of non-cursor (cursor-less) types, similar to the functionality of the DDL (Data Description Language). A DAO model is a collection of object classes that design a relational datab

Abstract: This article describes how to use ADO objects to dynamically create databases and data tables in VB Programs. These methods are of great practical value in the development of VB Database applications, and can improve the flexibility of database programs.Key words: database, data table, ADO, ADOX 1: Question proposalIn Visual Basic, there are three common data access interfaces: Database Access Object (DAO, Data Access Object) and remote database object (

. DAO is an outdated technology. Although it is still applied to many programs, it has some obvious disadvantages compared with the new technology: · DAO has weak object model functions, which are the weakest in all database access technologies. · DAO is designed to be applicable to

In Visual Basic, there are three common data access interfaces: Database Access Object (DAO, Data Access Object) and remote database object (rdo, remote data object) and ActiveX Data Objects (ADO and ActiveX Data Objects ). The database access technology is constantly improving, and each of these three interfaces represents the different development stages of the technology. The latest is ADO, Which is simpler than

data access method, but it is a pity that when ADO or DAO does not support a Database Manager and ODBC supports this database manager, in this particular case, you still need to Use ODBC. In most cases, this means obtaining the required driver from the database vendor, although Visual C ++ does include some product drivers (if you are using some mysterious features of the Database Manager, it is not very difficult to create your own interface token ). In essence, you always need to Use ODBC to

-- Network protocol: TCP/IPSet quoted_identifier onSet implicit_transactions offSet cursor_close_on_commit offSet ansi_warnings onSet ansi_padding onSet ansi_nulls onSet concat_null_yields_null onSet language Simplified ChineseSet dateformat ymdSet datefirst 7 Exec master.. xp_regwrite 'HKEY _ LOCAL_MACHINE ', 'Software/Microsoft/jet/4.0/engines', 'sandboxmode', 'reg _ dword', 1 Use master; DBCC addextendedproc ("xp_regwrite", "xpstar. DLL "); DBCC

Microsoft's data access technology generally has the following categories: First, UDA (universaldataaccess) This is the universal data access policy provided by Microsoft. Includes ADO, OLE DB, and ODBC. It not only provides access to the database, but also supports other data storage technologies, such as directory services, Excel tabular data, and Exchange Server data. Ii. ODBC (opendatabaseconnectivity) This is currently recognized as the best data access technology. The ODBC architecture inc

the existing data access technologies. If readers have ever contacted database programming, they may be familiar with ODBC and RDO. Open Database Connectivity (ODBC) is an application programming interface (API) that allows access to relational databases, such as Access and SQL Server. Because it is an API, many programmers, especially in the Visual Basic field, find it very complex to use. A remote Data Object (