Data Access Objects (DAO):DAO 提供 JET (Access) 資料庫的存取權。 此 API 可從 Microsoft Visual Basic、Microsoft Visual C++ 和指令碼語言中使用。 它包含在 Microsoft Office 2000 和 Office XP 中。 DAO 3.6 是這項技術的最終版本。 其無法在 64 位元 Windows 作業系統上使用。
远程数据对象 (RDO):RDO 专门用于访问远程 ODBC 关系数据源,无需复杂的应用程序代码即可更轻松使用 ODBC。 它随 Microsoft Visual Basic 版本 4、5 和 6 一起提供。 RDO 版本 2.0 是此技术的最后一个版本。 System.Data.OracleClient:System.Data.OracleClient 提供对 Oracle 数据库服务器的访问权限。它是使用...
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CREATE DATABASE [Test_1] ON PRIMARY ( NAME = N'test_1', FILENAME = N'D:\sqldata\test...
Basic CTE query, get full path of something recursive BCP Error - Copy direction must be either 'in', 'out' or 'format'. BCP Export to csv using UTF-8 or UTF-16 BCP Issue when using a format file and excluding columns. BCP Numeric value out of range BCP or BULK INSERT? why? bcp...
PL/SQL Block Structure A block is the most basic unit in PL/SQL. All PL/SQL programs are combined into blocks. These blocks can also be nested within one another. Usually, PL/SQL blocks combine statements that represent a single logical task. Therefore, different tasks within a single progr...
2.1Migration: Basic Options and Steps To migrate all or part of a third-party database to Oracle, you have the following basic options: Migrating Using the Migration Wizard Copying Selected Tables to Oracle However, before you perform any migration actions, you may want to prepare by setting ...
In contrast, SQL is traditionally vertically scalable, requiring more powerful hardware to handle increased load. Structure: SQL databases use a table-based structure ideal for multirow transactions and complex queries across related data, thanks to robust indexing and joining capabilities. NoSQL offers...
Basic Concepts of PL/SQL PL/SQL Block Structure Variables and Constants Control Structures Creating PL/SQL Procedures and Functions Error Handling in PL/SQL Working with Cursors Best Practices for PL/SQL Programming Conclusion Introduction to PL/SQL PL/SQL, which means Procedural Language/Structured...
htp.p('Content-Length: ' || dbms_lob.getlength(myblob)); owa_util.http_header_close; Initiate Direct BLOB download. wpg_docload.download_file(myblob); end; The structure of themytabletable is as follows: create table mytable (