java对应ABAP的DEC数据是什么类型 jdbc api对应的包

jdbc api

JDBC API is mainly divided into two package. Each when we are using JDBC, we have to import these packages to use classes and interfaces in our application.

JDBC API主要分为两个包。 每次使用JDBC时，我们都必须导入这些包才能在应用程序中使用类和接口。

1. java.sql java.sql
2. javax.sql javax.sql

(java.sql package)

This package include classes and interface to perform almost all JDBC operation such as creating and executing SQL Queries.

该软件包包括用于执行几乎所有JDBC操作(例如创建和执行SQL查询)的类和接口。

java.sql包的重要类和接口 (Important classes and interface of java.sql package)

classes/interface	Description
java.sql.BLOB	Provide support for BLOB(Binary Large Object) SQL type.
java.sql.Connection	creates a connection with specific database
java.sql.CallableStatement	Execute stored procedures
java.sql.CLOB	Provide support for CLOB(Character Large Object) SQL type.
java.sql.Date	Provide support for Date SQL type.
java.sql.Driver	create an instance of a driver with the DriverManager.
java.sql.DriverManager	This class manages database drivers.
java.sql.PreparedStatement	Used to create and execute parameterized query.
java.sql.ResultSet	It is an interface that provide methods to access the result row-by-row.
java.sql.Savepoint	Specify savepoint in transaction.
java.sql.SQLException	Encapsulate all JDBC related exception.
java.sql.Statement	This interface is used to execute SQL statements.
DatabaseMetaData	Comprehensive information about the database as a whole.
DriverAction	An interface that must be implemented when a Driver wants to be notified by DriverManager.
ResultSetMetaData	An object that can be used to get information about the types and properties of the columns in a ResultSet object.
RowId	The representation (mapping) in the Java programming language of an SQL ROWID value.
Savepoint	The representation of a savepoint, which is a point within the current transaction that can be referenced from the Connection.rollback
SQLData	The interface used for the custom mapping of an SQL user-defined type (UDT) to a class in the Java programming language.
SQLInput	An input stream that contains a stream of values representing an instance of an SQL structured type or an SQL distinct type.
SQLOutput	The output stream for writing the attributes of a user-defined type back to the database.
SQLType	An object that is used to identify a generic SQL type, called a JDBC type or a vendor specific data type.
SQLXML	cThe mapping in the JavaTM programming language for the SQL XML type.
Statement	The object used for executing a static SQL statement and returning the results it produces.
Struct	The standard mapping in the Java programming language for an SQL structured type.
Wrapper	Interface for JDBC classes which provide the ability to retrieve the delegate instance when the instance in question is in fact a proxy class.

类/接口	描述
java.sql.BLOB	提供对BLOB(二进制大对象)SQL类型的支持。
java.sql.Connection	创建与特定数据库的连接
java.sql.CallableStatement	执行存储过程
java.sql.CLOB	提供对CLOB(字符大对象)SQL类型的支持。
java.sql.Date	提供对Date SQL类型的支持。
java.sql.Driver	使用DriverManager创建驱动程序的实例。
java.sql.DriverManager	此类管理数据库驱动程序。
java.sql.PreparedStatement	用于创建和执行参数化查询。
java.sql.ResultSet	它是一个接口，提供用于逐行访问结果的方法。
java.sql.Savepoint	在事务中指定保存点。
java.sql.SQLException	封装所有与JDBC相关的异常。
java.sql.Statement	此接口用于执行SQL语句。
数据库元数据	有关整个数据库的全面信息。
DriverAction	当要通过DriverManager通知驱动程序时必须实现的接口。
ResultSetMetaData	可用于获取有关ResultSet对象中列的类型和属性的信息的对象。
行编号	Java编程语言中SQL ROWID值的表示(映射)。
保存点	Connection.rollback方法中引用该点。
SQL数据	用于将SQL用户定义类型(UDT)自定义映射到Java编程语言中的类的接口。
SQL输入	输入流，其中包含代表SQL结构化类型或SQL不同类型的实例的值的流。
SQL输出	用于将用户定义类型的属性写回到数据库的输出流。
SQL类型	用于标识通用SQL类型(称为JDBC类型或特定于供应商的数据类型)的对象。
SQLXML	c使用JavaTM编程语言针对SQL XML类型的映射。
声明	用于执行静态SQL语句并返回其产生的结果的对象。
结构	Java编程语言中用于SQL结构化类型的标准映射。
包装纸	JDBC类的接口，当相关实例实际上是代理类时，该接口提供检索委托实例的功能。

(The javax.sql package)

This package is also known as JDBC extension API. It provides classes and interface to access server-side data.

该软件包也称为JDBC扩展API。 它提供了类和接口来访问服务器端数据。

javax.sql包的重要类和接口 (Important classes and interface of javax.sql package)

classes/interface	Description
javax.sql.ConnectionEvent	Provide information about occurence of event.
javax.sql.ConnectionEventListener	Used to register event generated by PooledConnection
javax.sql.DataSource	Represent the DataSource
javax.sql.PooledConnection	provide object to manage connection pools.
CommonDataSource	Interface that defines the methods which are common between DataSource, XADataSource and ConnectionPoolDataSource.
RowSet	The interface that adds support to the JDBC API for the JavaBeans™ component model.
RowSetInternal	The interface that a RowSet object implements in order to present itself to a RowSetReader or RowSetWriter
RowSetListener	An interface that must be implemented by a component that wants to be notified when a significant event happens in the life of a RowSet
RowSetMetaData	An object that contains information about the columns in a RowSet
RowSetReader	The facility that a disconnected RowSet
RowSetWriter	An object that implements the RowSetWriter interface, called a writer.
StatementEventListener	An object that registers to be notified of events that occur on PreparedStatements that are in the Statement pool.
XAConnection	An object that provides support for distributed transactions.
XADataSource	A factory for XAConnection objects that is used internally.

类/接口	描述
javax.sql.ConnectionEvent	提供有关事件发生的信息。
javax.sql.ConnectionEventListener	PooledConnection对象生成的事件。
javax.sql.DataSource	DataSource接口。
javax.sql.PooledConnection	提供对象来管理连接池。
CommonDataSource	DataSource，XADataSource和ConnectionPoolDataSource之间通用方法的接口
行集	该接口增加了对JavaBeans™组件模型的JDBC API的支持。
RowSetInternal	RowSetReader或RowSetWriter对象。
RowSetListener	RowSet对象的生存期内发生重大事件时通知的组件实现。
RowSetMetaData	RowSet对象中列的信息的对象。
RowSetReader	RowSet对象调用的功能是用数据行填充自身。
RowSetWriter	RowSetWriter接口的对象，称为writer
StatementEventListener	一个对象，注册该对象以通知语句池中PreparedStatement上发生的事件。
XA连接	提供对分布式事务的支持的对象。
XADataSource	XAConnection对象的工厂。