DB_FILES specifies the maximum number of database files that can be opened for this database. The maximum valid value is the maximum number of files, subject to operating system constraint, that will ever be specified for the database, including files to be added by ADD DATAFILE statements. ...
This Oracle tutorial explains how to use the Oracle INSERT statement with syntax, examples, and practice exercises. The Oracle INSERT statement is used to insert a single record or multiple records into a table in Oracle.
This Oracle tutorial explains how to use the OracleSELECT statementwith syntax, examples, and practice exercises. Description The Oracle SELECT statement is used to retrieve records from one or more tables in an Oracle database. Syntax The syntax for the SELECT statement in Oracle/PLSQL is: SELE...
The PL/SQL block inExample 6-10queries multiple values into PL/SQL tables, with and without bulk binds. Without bulk bind, PL/SQL sends a SQL statement to the SQL engine for each selected employee, leading to context switches that slow performance. Example 6-10 SELECT Statements that Referen...
1.1 Bulk Binding 和 Bulk SQL From: http://download.oracle.com/docs/cd/E11882_01/appdev.112/e17125/adfns_packages.htm#ADFNS343 Oracle Database uses two engines to run PL/SQL blocks and subprograms. The PL/SQL engine runs procedural statements, while the SQL engine runs SQ...
支持Oracle、SQL Server、MySQL、PostgreSQL、SQLite五种数据库;另外只要ADO.NET支持的数据库,都可以很方便地通过实现IProvider接口支持,仅需写150行左右的代码 有配套的Model生成器 数据插入、更新、批量插入、批量更新,支持实体类、实体类集合,无需拼SQL;删除操作支持根据主键或查询条件删除;增删改支持联合主键 查询以...
Oracle9i SQL Reference for details about the SET TRANSACTION and ALTER SESSION statements.The settings for these parameters should be changed only when an instance is shut down. If multiple instances are accessing a single database, then all instances should use the same setting for these parameters...
Support for migrating "Continue" statements from Oracle to SQL Server. Support in SSMA command line to alter Data Type mapping and Project Preferences. Support for migrating data using SQL Server Integration Services (SSIS). After converting the schema, it's possible to create an SSIS package by...
This chapter shows you how to use Oracle Dynamic SQL, an advanced programming technique that adds flexibility and functionality to your applications. You will learn four methods for writing programs that accept and process SQL statements at run time. This chapter contains the following topics:...
数据库面试题(SQL+ORACLE) 数据库基础(面试常见题) 一、数据库基础 1. 数据抽象:物理抽象、概念抽象、视图级抽象,内模式、模式、外模式 2. SQL语言包括数据定义、数据操纵(Data Manipulation),数据控制(Data Control) 数据定义:Create Table,Alter Table,Drop Table, Craete/Drop Index等...