At IU, how do I download and install the Oracle Database 11g Release 2 client for 64-bit Windows? The following instructions are for 64-bit Windows. Database Application Builder Features Features: Create desktop applications, database applications and Web applications without writing any code. ![]() ![]() IBM i. Series Access for Windows Custom Connection Properties for OLE DB This document describes the connection properties available for the OLE DB providers shipped with i. Series Access for Windows. The following list contains all of the custom properties that are available for the OLE DB providers shipped with i. Series Access for Windows (IBMDA4. IBMDARLA, and IBMDASQL). The release at which each property was added is indicated. For more information about any of these properties, consult the OLE DB technical reference that can be found in the Programmer's Toolkit included with i. Series Access for Windows. Add Statements to SQL Package (V5. R3)The add statements property is a Boolean value used to indicate how SQL packages should be used when package support is enabled. If it is set to True, new statements will be added to the SQL package. This is the default value. If it is set to False, the provider will use the existing statements in the package, but will not add any new statements to the package. Application Name (V6. R1)Specifies the application name for the connection. Find publicly-available downloads from Teradata. Use the Display Downloads From sidebar on the right to browse, or select one of the popular downloads below. In computing, Open Database Connectivity (ODBC) is a standard application programming interface (API) for accessing database management systems (DBMS). ![]() Sets or returns a string value. Setting this value updates the DB2 for i. OS SQL CLIENT. The default value is the name of the EXE running the current application. Serves as a quick start guide, which describes Oracle technologies for the Microsoft.NET Framework, including the key features of Oracle Data Provider for.NET and.Note: This property only applies to database host server jobs (QZDASOINIT or QZDASSINIT). Block Fetch (V5. R3)The block fetch property is a Boolean value that determines the provider fetch behavior when the ADO cache size is set to 1. If it is set to True, the provider will fetch a block of records from the database when an application is scrolling through a result set. If it is set to False, then only one row will be fetched at a time. Note that this property influences blocking only on V5. R3 when the ADO cache size is 1. Previous versions always fetched the data in blocks. Block Size (V5. R4)The block size property specifies the amount of data to fetch from the i. Series server in KB. It has a range from 1 to 8. For example, if Block. Size is set to 1. KB at a time from the host. If the application sets Block. Size, the value of the Cache Size property is ignored, and Block Size will be used. If the application does not set Block Size, the application reverts to existing behavior which is to use a combination of Block. Fetch and Cache Size. For example, place the following value in the Provider String field when creating a new Linked Server: Block. Size=1. 00. 0Catalog Library List (V5. R1)The catalog library list property determines which libraries are searched during an unqualified catalog or schema request. This prevents the request from searching all libraries on the system which can cause long delays and performance problems with the PC application. This property should be a comma separated list of libraries, and may contain the following special values: *USRLIBL - The library list of the user is added to the value of this property.*ALL - All libraries on the system are searched. This is not a recommended setting. Client Accounting (V6. R1)Specifies the client accounting for the connection. Sets or returns a string value. Setting this value updates the DB2 for i. OS SQL CLIENT. The default value is an empty string. Client Program ID (V6. R1)Specifies the client program ID for the connection. Sets or returns a string value. Setting this value updates the DB2 for i. OS SQL CLIENT. The default value is an empty string. Client User ID (V6. R1)Specifies the client user ID that is used for accounting purposes for the connection. This client user ID is not used for any authentication purposes. Sets or returns a string value. Setting this value updates the DB2 for i. OS SQL CLIENT. The default value is an empty string. Client Workstation Name (V6. R1)Specifies the name of the client workstation for the connection. Sets or returns a string value. Setting this value updates the DB2 for i. OS SQL CLIENT. The default value is an empty string. Convert Date Time to Char (V5. R1)The convert date time to char property allows the programmer to choose how date, time, and timestamp values are represented. It this property is set to TRUE (the default), these data types are converted to string representations. However, if set to FALSE, these values are converted to PC data types representing date, time, and timestamps. Cursor Sensitivity (V5. R3)The cursor sensitivity property is used to influence how changes made to database tables are reflected in an open cursor in the application. It is used to indicate if underlying database changes should be seen or not seen in the current result set. The property might contain one of the following values: 0. Ascensive. This is the default behavior, and it indicates that changes might or might not be seen in the current result set. If a static cursor is used, this property is ignored because static cursors are always insensitive. Ascensive is the default value for this property. Insensitive. This value indicates that the application does not want to see changes that are made to the underlying database. This value is ignored if a dynamic cursor is requested. Sensitive. This value indicates that the application does want to see changes made to the underlying database. This value is ignored for forward- only and static cursors. Data Compression (V5. R3)The data compression property is used to indicate if SQL data should be compressed in communication flows to and from an IBM. It is a Boolean value, and defaults to. True. This property is used to define what library should be used for unqualified SQL statements. Any SQL statement that does not qualify table names is run against the default collection, including INSERT, CREATE, UPDATE, and SELECT statements. This property applies only to SQL- type connections. Other functions of the IBMDA4. Record Level Access, Data queues, Program, and Command calls) do not implement this property. For most applications, this forced the library name to be qualified in all SQL statements. When used with system naming, this allows an unqualified SQL statement to search the job library list. If equidistant, round to the nearest even digit. ROUND. If equidistant, round up. This is the same as the rounding that is specified in Query for i. OS when defining *QRYDFN objects. ROUND. This is the same as truncation or rounding towards zero. ROUND. If equidistant, round down. ROUND. DECFLOAT (1. DECFLOAT (3. 4) supports up to 3. This is a special CCSID that indicates to the provider that the data is to be considered as raw binary or hexadecimal data, and should not be translated. This property will override this default behavior and force the IBMDA4. Prior to connecting to the server, this property is set to a numeric value between 0 and 6. This value indicates which CCSID the data should be converted from when the translation is made. The default value is 6. If the property is set to 0, the CCSID of the operating system job is used. The provider will assume that the data is encoded in the CCSID specified for this property. The default is 1. Value. Behavior. Description. Ignore errors identifying invalid decimal data. Return invalid decimal data to the application without converting to zeros. Do not ignore errors identifying invalid decimal data. Return invalid decimal data to the application as zeros. Ignore errors identifying invalid decimal data and set divide by zero results. Return invalid decimal data to the application without converting to zeros, and return NULL when dividing by zero. Note: This value is valid only for V6. R1. M0 and later hosts. Do not ignore errors identifying invalid decimal data and set divide by zero results. Return invalid decimal data to the application as zeros and return NULL when dividing by zero. Note: The Handle Numeric Data Errors property only applies to applications using SQL statements. Hexadecimal literals can be used for insertion into either CHAR FOR BIT DATA fields, or BINARY fields. They cannot be used for both in the same connection, so this integer property determines how the database should use hexadecimal literals. The following values are allowed. This is the default value, and it indicates that hexadecimal literals are used for insertion into CHAR FOR BIT DATA fields. This value indicates that hexadecimal literals are used for insertion into BINARY fields. Initial Catalog (V5. R2)The initial catalog option is used to indicate which relational database should be used on the target server. Because multiple databases can exist using independent auxiliary storage pools (IASP), this string property determines which will be used. The special value of *SYSBAS can be used to connect to the *LOCAL database. It can be used in problem diagnosis to determine which job the provider is using. This property does not apply to LOB data since the System i OLE DB provider never truncates blanks from LOB data. Also see Reading and Writing values for related information. This value should be specified before making the connection, as it is read only after the connection has been established. The special value of. USRLIBL may be inserted into the list as a placeholder for the current library list of the job. Note that this property only affects the database host server connections (QZDASOINIT). Valid values for this integer property are 3. Valid values range from 0 to the value of Maximum Decimal Precision. The default value is 3. Valid values are 0 (default) to 9. This will also affect search order for unqualified SQL references. The following values are allowed. This is the default value, and specifies that SQL naming should be used. The schema qualifier is a period (LIBRARY. TABLE). 1. This value indicates that system naming should be used. The schema qualifier is a forward slash (LIBRARY/TABLE). Query Optimize Goal (V5. R4)Query optimize goal is used to determine how the database host server will optimize SQL queries. Note that this option requires that the target i. Series system also be at V5. R4. The following values are allowed. This is the default value, and allows the host server to determine optimization. Microsoft Data Access Components - Wikipedia. Microsoft Data Access Components (MDAC; also known as Windows DAC) is a framework of interrelated Microsoft technologies that allows programmers a uniform and comprehensive way of developing applications that can access almost any data store. Its components include: Active. X Data Objects (ADO), OLE DB, and Open Database Connectivity (ODBC). There have been several deprecated components as well, such as the Microsoft Jet Database Engine, MSDASQL (the OLE DB provider for ODBC), and Remote Data Services (RDS). Some components have also become obsolete, such as the former Data Access Objects. API and Remote Data Objects. The first version of MDAC was released in August 1. At that time Microsoft stated MDAC was more a concept than a stand- alone program and had no widespread distribution method. Later Microsoft released upgrades to MDAC as web- based redistributable packages. Eventually, later versions were integrated with Microsoft Windows and Internet Explorer, and in MDAC 2. SP1 they ceased offering MDAC as a redistributable package. Throughout its history, MDAC has been the subject of several security flaws, which led to attacks such as an escalated privileges attack, although the vulnerabilities were generally fixed in later versions and fairly promptly. The current version is 2. Microsoft technologies. MDAC is now known as Windows DAC in Windows Vista. Architecture. MDAC architecture may be viewed as three layers: a programming interface layer, consisting of ADO and ADO. NET, a database access layer developed by database vendors such as Oracle and Microsoft (OLE DB, . NET managed providers and ODBC drivers), and the database itself. These component layers are all made available to applications through the MDAC API. The Microsoft SQL Server Network Library, a proprietary access method specific to Microsoft SQL Server, is also included in the MDAC. Developers of Windows applications are encouraged to use ADO or ADO. NET for data access, the benefit being that users of the application program are not constrained in their choice of database architecture except that it should be supported by MDAC. Naturally, developers still have the choice of writing applications which directly access OLE DB and ODBC. Microsoft SQL Server Network Library. Though Net- Lib is specific to the SQL Server, Microsoft includes it with MDAC. The SQL Server uses the Open Data Services (ODS) library to communicate with Net- Lib, which interfaces directly with the Windows NT operating system line's Win. The SQL Server Network Library is controlled through the use of a Client Network Utility, which is bundled with the SQL Server. Each Net- Lib supported network protocol has a separate driver (not to be confused with a device driver), and has support for a session layer in its protocol stack. There are two general types of Net- Lib: the primary and the secondary. The primary Net- Lib consists of a Super Socket Net- Lib and the Shared Memory Net- Lib, while there are numerous secondary Net- Libs, including TCP/IP and named pipes network libraries (named pipes are a method of communicating with other processes via a system- persistent pipeline that is given an identity). The Microsoft OLE DB Provider for SQL Server (SQLOLEDB) communicates via primary Net- Libs. The Super Socket Net- Lib deals with inter- computer communications and coordinates the secondary Net- Libs – though the TCP/IP secondary Net- Lib is an exception in that it calls on the Windows Socket 2 API directly. The Banyan VINES, Apple. Talk, Server. Net, IPX/SPX, Giganet, and RPC Net- Libs were dropped from MDAC 2. The Network Library router had the job of managing all these protocols, however now only the named pipes secondary Net- Lib is managed by the router. The Super Socket Net- Lib also handles data encryption via the use of the Windows SSL API. The Shared Memory Net- Lib, on the other hand, manages connections between multiple instances of SQL Server that exist on one computer. It uses a shared memory area to communicate between the processes. This is inherently secure; there is no need for data encryption between instances of SQL Server that exist on one computer as the operating system does not allow any other process access to the instances' area of shared memory. Net- Lib is also able to support the impersonation of a logged in user's security context for protocols that support authenticated connections (called trusted connections). This allows Net- Lib to provide an integrated logon authentication mechanism via the use of Windows Authentication. Windows Authentication is not supported on Windows 9. Windows Me. Microsoft has used this technology to separate the application from data can store in the website the data store that it needs to access. This was done because different applications need access to different types and sources of data, and do not necessarily need to know how to access technology- specific functionality. The technology is conceptually divided into consumers and providers. The consumers are the applications that need access to the data, and the provider is the software component that exposes an OLE DB interface through the use of the Component Object Model (or COM). OLE DB is the database access interface technology used by MDAC. OLE DB providers can be created to access such simple data stores as a text file or spreadsheet, through to such complex databases as Oracle and SQL Server. However, because different data store technology can have different capabilities, OLE DB providers may not implement every possible interface available. The capabilities that are available are implemented through the use of COM objects – an OLE DB provider will map the data store technology's functionality to a particular COM interface. Microsoft calls the availability of an interface to be . Additionally, however, providers may also augment the capabilities of a data store; these capabilities are known as services in Microsoft parlance. The Microsoft OLE DB Provider for SQL Server (SQLOLEDB) is the OLE DB provider that Microsoft provides for the Microsoft SQL Server from version 6. According to Microsoft, SQLOLEDB will be . A user can use a Data Link Properties dialog box to save connection information in a . Consequently, these files provide a convenient level of indirection. Additionally, the dialog box specifies a number of alternate OLE DB data providers for a variety of target applications. In MDAC this interface is defined as a DLL. A separate module or driver is needed for each database that must be accessed. The functions in the ODBC API are implemented by these DBMS- specific drivers. The driver that Microsoft provides in MDAC is called the SQL Server ODBC Driver (SQLODBC), and (as the name implies) is designed for Microsoft's SQL Server. It supports SQL Server v. It handles the SQL request and converts it into a request that the individual database system understands. Active. X Data Objects (ADO) is a high- level programming interface to OLE DB. It uses a hierarchical object model to allow applications to programmatically create, retrieve, update and delete data from sources supported by OLE DB. ADO consists of a series of hierarchical COM- based objects and collections, an object that acts as a container of many other objects. A programmer can directly access ADO objects to manipulate data, or can send an SQL query to the database via several ADO mechanisms. ADO is made up of nine objects and four collections. The collections are: Fields: This collection contains a set of Field objects. The collection can be used in either a Recordset object or in a Record object. In a Recordset object, each of the Field objects that make up the Fields collection corresponds to a column in that Recordset object. In a Record object, a Field can be an absolute or relative URL that points into a tree- structured namespace (used for semi- structured data providers like the Microsoft OLE DB Provider for Internet Publishing) or as a reference to the default Stream object associated with that Record object. When an ADO operation creates an error, the collection is cleared and a new group of Error objects are created in the collection. The connection object stores information about the session and provides methods of connecting to the data store. As some data stores have different methods of establishing a connection, some methods may not be supported in the connection object for particular OLE DB providers. A connection object connects to the data store using its 'Open' method with a connection string which specifies the connection as a list of key value pairs (for example: . This must be either. OLE DB provider (for example SQLOLEDB), using the syntax . The command object can send SQL queries directly to the provider through the use of the Command. Text property, send a parameterised query or stored procedure through the use of a Parameter object or Parameters collection or run a query and return the results to a dataset object via the Execute method. There are several other methods that can be used in the Command object relating to other objects, such as the Stream, Record. Set or Connection objects. The Record. Set object contains a Fields collection and a Properties collection. The Properties collection is a set of Property objects, which defines a particular functionality of an OLE DB provider. The Record. Set has numerous methods and properties for examining the data that exists within it. Adding new records is performed through the Add. New function and then by calling on the Update or Update. Batch method. However, if for some reason the deletion cannot occur, such as because of violations in referential integrity, then the recordset will remain in edit mode after the call to the Update method. The programmer must explicitly call on the Cancel. Update function to cancel the update. Additionally, ADO can roll back transactions (if this is supported) and cancel batch updates.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
October 2017
Categories |