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Direct Oracle Access是一個(gè)組件集,它能幫助您實(shí)現(xiàn)將Borland's Delphi和C++Builder等開發(fā)工具集成到您的數(shù)據(jù)庫(kù)系統(tǒng)中,使您的開發(fā)工具得到最大化的利用,從而提高整個(gè)開發(fā)過程的工作效率。
標(biāo)簽:開發(fā)商: Allround Automations
當(dāng)前版本: v4.1.3 for Delphi 10.4 Rio
產(chǎn)品類型:控件
產(chǎn)品功能:數(shù)據(jù)庫(kù)管理工具
平臺(tái)語言:
開源水平:不提供源碼
本產(chǎn)品的分類與介紹僅供參考,具體以商家網(wǎng)站介紹為準(zhǔn),如有疑問請(qǐng)來電 023-68661681 咨詢。
If you are using Borland's Delphi or C++Builder to develop Oracle applications, then the Direct Oracle Access component set can help you to make a seamless integration between this great development tool and database system. Not only will your application take maximum advantage of both products
* 關(guān)于本產(chǎn)品的分類與介紹僅供參考,精準(zhǔn)產(chǎn)品資料以官網(wǎng)介紹為準(zhǔn),如需購(gòu)買請(qǐng)先行測(cè)試。
高性能 無論聯(lián)機(jī)事務(wù)處理和批處理應(yīng)用程序可以受益于Oracle的性能特性。直接Oracle訪問,顧名思義,直接訪問Oracle界面。這保證為標(biāo)準(zhǔn)的數(shù)據(jù)庫(kù)訪問函數(shù)的最佳性能。對(duì)于數(shù)組取,陣列DML,PL / SQL塊,PL / SQL表,局部聲明緩存和直接路徑加載引擎使您的支持,更優(yōu)化應(yīng)用程序的性能關(guān)鍵的功能。 |
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簡(jiǎn)單應(yīng)用分布 直接Oracle訪問應(yīng)用程序不需要中間件像BDE或ODBC,它只需要Oracle SQL * Net或的Net8。因此你可以沒有許多通常涉及到中間件安裝的版本依賴或配置問題部署應(yīng)用程序。 |
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Example模式查詢 TOracleDataSet組件具有實(shí)例查詢模式,使您能夠提供在應(yīng)用程序中QBE形式無需任何額外的編程,且無任何附加組件或控件。由此產(chǎn)生的QBE查詢Oracle服務(wù)器上執(zhí)行,這樣的表現(xiàn)將是最佳的,網(wǎng)絡(luò)流量將是最小的。用戶可以提供簡(jiǎn)單的查詢值,如JONES或100,可以包括通配符的字符串值,如JON%,可以包括比較運(yùn)算符,如>、< |
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Oracle監(jiān)控器 要監(jiān)視你的直接Oracle訪問應(yīng)用程序的數(shù)據(jù)庫(kù)訪問活動(dòng),你可以使用Oracle監(jiān)視器實(shí)用程序。它顯示每個(gè)活動(dòng)的SQL,變量,時(shí)間戳,已用時(shí)間,網(wǎng)絡(luò)統(tǒng)計(jì),數(shù)據(jù)庫(kù)統(tǒng)計(jì)和查詢執(zhí)行計(jì)劃。這可以幫助尋找性能瓶頸,調(diào)優(yōu)的目的,以解決應(yīng)用程序錯(cuò)誤。 |
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警報(bào)和事件管 Oracle服務(wù)器包括一個(gè)DBMS_ALERT和DBMS_PIPE包事件處理。該TOracleEvent直接在Oracle訪問可以作為這些事件的接收器功能。它可以在你的應(yīng)用程序的后臺(tái)線程,并能傳播數(shù)據(jù)庫(kù)事件熟悉的對(duì)象事件。這些事件可以與應(yīng)用程序的主線程同步或異步發(fā)生。 |
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SQL腳本 如果您需要執(zhí)行許多數(shù)據(jù)定義語言(DDL)語句,例如執(zhí)行應(yīng)用程序的數(shù)據(jù)庫(kù)安裝部分,你可以使用TOracleScript組件。它有一個(gè)屬性編輯器,允許你開發(fā)腳本和個(gè)人的命令。在可擴(kuò)展的腳本語言遵循基本的SQL * Plus語法,并支持所有的SQL語句。它也支持替代變量,使您的scriptscustomizable。 |
Both online transaction and batch processing applications can benefit from Oracle's performance features. Direct Oracle Access, as the name suggests, directly accesses the Oracle Interface. This guarantees optimal performance for standard database access functions. Support for Array Fetching, Array DML, PL/SQL Blocks, PL/SQL Tables, Local Statement Caching and the Direct Path Load Engine enable you to optimize your application's performance critical functions even more.
A Direct Oracle Access application does not require middleware like the BDE or ODBC, it merely requires Oracle SQL*Net or Net8. Consequently you can deploy your application without many of the version dependency or configuration problems typically involved with middleware installation.
Most PL/SQL code in Oracle databases is programmed in packages. Direct Oracle Access provides a TOraclePackage component that allows you to easily call packaged program units without detailed declarations of these program units and their parameters.
Furthermore Direct Oracle Access includes a Package Wizard that can generate classes to encapsulate the program units and record types defined in packages. This will make your Oracle packages a natural extension of the Object Pascal or C++ language.
The dataset component in Direct Oracle Access supports Oracle record locking, record refreshing, server generated values, automatic sequence value generation, and BLOB compression. Master/detail relations can automatically be setup if a foreign key exists between the master and detail table or if the master table contains one or more collection columns or attributes (nested table or varray).
The TOracleDataSet can use much of the information in the Oracle Dictionary at run time. Server Constraints can be checked on the client, and constraint error messages can be read from a message table. Format masks, range values and default values can also be read from the dictionary. This allows you to create applications with a minimum amount of 'database knowlegde' compiled into the executable, dynamically adopting changes in the database without even recompiling it.
The TOracleDataSet component has a Query By Example mode that enables you to provide QBE Forms in your application without any additional programming, and without any additional components or controls. The resulting QBE queries are performed on the Oracle Server, so that performance will be optimal and network traffic will be minimal. The user can supply simple query values such as JONES or 100, can include wildcard characters for string values such as JON%, and can include comparison operators such as >, <, NOT, BETWEEN, IN and so on.
To monitor the database access activities of your Direct Oracle Access application you can use the Oracle Monitor utility. It displays the SQL, variables, timestamp, elapsed time, network statistics, database statistics and query execution plan of each activity. This can be helpful to find performance bottlenecks, for tuning purposes, and to solve application errors.
The Oracle Server includes a dbms_alert and dbms_pipe package for event processing. The TOracleEvent in Direct Oracle Access can function as a receiver for these events. It works in a background thread of your application, and can propagate database events to the familiar object events. These events can occur synchronously or asynchronously with the main thread of your application.
If you need to execute many data definition language (DDL) statements, for example to perform the database installation part of your application, you can use the TOracleScript component. It has a property editor that allows you to develop the script and the individual commands. The extendible script language follows the basic SQL*Plus syntax and supports all SQL statements. It also supports substitution variables to make your scriptscustomizable.
To take advantage of the Advanced Queuing option of Oracle8 you can make use of the TOracleQueue component. The TOracleQueue component encapsulates the basic functionality of the DBMS_AQ package. It provides a convenient way to enqueue messages into a queue or to dequeue messages from a queue. Messages can be dequeued in a background thread of your application, and the events that are generated in threaded mode can occur synchronously or asynchronously with the main thread of your application.
In server applications that frequently need to create sessions to process requests from client applications, it may be useful to use connection pooling. Without a pooling concept, each request could lead to an actual database logon and logoff. By using the TOracleSessionPool component, you can maintain a pool of database sessions that can be used and reused for different requests. You can define the minimum an maximum number of sessions in the pool, define the TimeOut behavior for idle sessions in the pool, and preset the username, password and database.
Direct Oracle Access supports many Oracle specific features. Besides the features mentioned above, it supports Oracle8 and Oracle8i features like LOB Locators, Objects & References, XMLTYPE, Timestamps, Scrollable Queries, Password Expiration, External Procedure development, and the Oracle Services for MTS..
Direct Oracle Access requires a Windows 95, 98, ME, NT4, 2000, XP, Vista, Windows 7 or Windows 8 client, with Oracle SQL*Net, Net 8, Net 9, Net 10, Net 11 or Net 12 installed. The supported Oracle Server versions are 7.x, 8.x, 8i, 9i, 10g, 11g and 12c on any platform. Direct Oracle Access is available for all recent versions of Delphi and C++Builder.
更新時(shí)間:2020-08-28 09:56:14.000 | 錄入時(shí)間:2013-09-16 09:27:14.000 | 責(zé)任編輯:龔雪
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