mining database metadata with jdbc

... time with this interface 140 Chapter 8: Mining Database Metadata with JDBC Creating DatabaseMetaData objects A Connection object represents a database connection and also instantiates a DatabaseMetaData ... 8: Mining Database Metadata with JDBC }//end RSMetaData class The following is the output from Listing 8−1: Connecting to database Metadata for Employees table: Column Information: Column, JDBC_ Type, ... data types and JDBC types, as well as how to map a class to a UDT on the database server 133 Chapter 8: Mining Database Metadata with JDBC In This Chapter • Understanding what metadata is and...

Ngày tải lên: 14/08/2014, 06:21

... −3 Database Type Name: LONG JDBC Type: −1 Database Type Name: CHAR JDBC Type: Database Type Name: NUMBER JDBC Type: Database Type Name: NUMBER JDBC Type: Database Type Name: NUMBER JDBC Type: Database ... Database Type Name: NUMBER JDBC Type: −7 Database Type Name: NUMBER JDBC Type: −6 Database Type Name: NUMBER JDBC Type: −5 Database Type Name: LONG RAW JDBC Type: −4 Database Type Name: RAW JDBC ... Name: FLOAT JDBC Type: Database Type Name: REAL JDBC Type: Database Type Name: VARCHAR2 JDBC Type: 12 Database Type Name: DATE JDBC Type: 93 Database Type Name: STRUCT JDBC Type: 2002 Database Type...

Ngày tải lên: 14/08/2014, 06:21

... client Java Application JDBC API JDBC Driver Manager JDBC Driver API JDBC- ODBC Bridge Vendor Specific ODBC Driver Vendor Specific JDBC Driver Database Database JDBC Data Types JDBC Type BIT TINYINT ... about the database as a whole DatabaseMetaData dbMetaData = connection.getMetaData(); String productName = dbMetaData.getDatabaseProductName(); String productVersion = dbMetaData.getDatabaseProductVersion(); ... Optionally, look up info about the database DatabaseMetaData dbMetaData = connection.getMetaData(); String productName = dbMetaData.getDatabaseProductName(); System.out.println( "Database: " + productName);...

Ngày tải lên: 23/03/2014, 16:20

... ODBC drivers that come with Access 95, and an Access database to develop Java applets that can interact with a database without having a database server To set up an Access database for ODBC, follow ... binary data in a database with the JDBC In Chapter 6, we’ll cover the SQL data types and their mapping into Java /JDBC, as well object-relational mapping ODBC’s Part In The JDBC The JDBC and ODBC ... 12, The JDBC API, provides you with a reference for all of the methods, variables, classes, exceptions, and interfaces that are the JDBC Table of Contents Java Database Programming with JDBC by...

Ngày tải lên: 23/03/2014, 16:21

... systems via GENESIS ODBC-supported databases ODBC-supported databases YARD-SQL Database 3.1.3 Alternatives to JDBC Without JDBC, only disparate, proprietary database access solutions exist These ... applications The Java DataBase Connectivity API, or JDBC, provides database connectivity Using JDBC, an application can perform database access independent of the actual database engine being ... relational databases Additionally, with JDBC so tightly bound to SQL, it is difficult to create JDBC drivers to run against an object database As of the writing of this book, Sun, in cooperation with...

Ngày tải lên: 25/03/2014, 10:41

... systems via GENESIS ODBC-supported databases ODBC-supported databases YARD-SQL Database 3.1.3 Alternatives to JDBC Without JDBC, only disparate, proprietary database access solutions exist These ... applications The Java DataBase Connectivity API, or JDBC, provides database connectivity Using JDBC, an application can perform database access independent of the actual database engine being ... relational databases Additionally, with JDBC so tightly bound to SQL, it is difficult to create JDBC drivers to run against an object database As of the writing of this book, Sun, in cooperation with...

Ngày tải lên: 27/06/2014, 11:20

... systems via GENESIS ODBC-supported databases ODBC-supported databases YARD-SQL Database 3.1.3 Alternatives to JDBC Without JDBC, only disparate, proprietary database access solutions exist These ... your database engine is installed and your database is all set up, you will need a JDBC driver for that database engine You can find an mSQL -JDBC driver at http://www.imaginary.com/Java/mSQL -JDBC ... 3.3 page 26 JDBC and Java 2nd edition Figure 3.3 The different kinds of JDBC drivers Type These drivers use a bridging technology to access a database The JDBC- ODBC bridge that comes with JDK 1.2...

Ngày tải lên: 12/08/2014, 16:21

... forth between the database many times per minute Suddenly, the "open connection, talk to the database, close connection" model of JDBC programming becomes a huge bottleneck The JDBC Optional Package ... an instance of the ImaginaryRowSet class, a databaseindependent rowset implementation that comes with the mSQL -JDBC driver The RowSet is configured with four attributes: dataSourceName, username, ... You have only one more element of JDBC to cover—distributed transactions All database access you have dealt with so far involves transactions against a single database In this environment, your...

Ngày tải lên: 12/08/2014, 16:21

... Isolated database connectivity I've already mentioned that JDBC frees you from concerns related to portability among proprietary database APIs Unfortunately, it does not—it could not—provide us with ... the server Database connectivity becomes an issue hidden within each server object Suddenly, the presentation layer stops caring about where the database is, or if you are even using a database ... is the relational database Here you have arrived at your goal Instead of saving to a file with each change in an object, your objects update the database Although saving to a database is a lot...

Ngày tải lên: 12/08/2014, 16:21

... by far the relational database and for Java, that means JDBC 9.1 Database Transactions Transactions appear throughout this book In the first half of this book, you saw how JDBC manages transaction ... create a database persistence library, you thus need to create database- specific extensions of these two classes Here you get the chance to put your JDBC skills to use I already showed how a JDBCTransaction ... rollback() methods JDBC support requires still more work You need to create JDBC Connection instances used to talk to the database You also need to write the actual methods that talk to the database A...

Ngày tải lên: 12/08/2014, 16:21

... JDBC Core API and the JDBC Optional Package Chapter 11 JDBC Reference The java.sql package listed in Figure 11.1 contains the entire JDBC API It first became part of the core Java libraries with ... Java Example 9.5 The Abstract JDBCSupport Class with a Generic SQL Search Algorithm package com.imaginary.lwp .jdbc; import com.imaginary.lwp.BaseFacade; page 150 JDBC and Java 2nd edition import ... specifically enable you to work with a database in optimistic concurrency mode Pessimistic concurrency means that the database will lock data on read and not release that lock without a commit In other...

Ngày tải lên: 12/08/2014, 16:21

... Chapter 12 The JDBC Optional Package Reference The JDBC Optional Package is a new extension to the JDBC API Its purpose is to provide nonessential, but useful database access features without bogging ... does not come with the JDK Certain vendors may, of course, page 227 JDBC and Java 2nd edition choose to include this package with their virtual machines If yours does not include the JDBC Optional ... current results setMetaData( ) public void setMetaData(RowSetMetaData rsmd) throws java.sql.SQLException; Description This method assigns a rowset's meta-data RowSetListener page 241 JDBC and Java...

Ngày tải lên: 12/08/2014, 16:21

... I used JDK 1.2 I performed database access for all of the book except Chapter 4, using the mSQL 1.0.16 database engine with the mSQL -JDBC 2.0a2 JDBC driver I handled database access for Chapter ... applications The Java DataBase Connectivity API, or JDBC, provides database connectivity Using JDBC, an application can perform database access independent of the actual database engine being ... relational databases Additionally, with JDBC so tightly bound to SQL, it is difficult to create JDBC drivers to run against an object database As of the writing of this book, Sun, in cooperation with...

Ngày tải lên: 12/08/2014, 21:20

... systems via GENESIS ODBC-supported databases ODBC-supported databases YARD-SQL Database 3.1.3 Alternatives to JDBC Without JDBC, only disparate, proprietary database access solutions exist These ... your database engine is installed and your database is all set up, you will need a JDBC driver for that database engine You can find an mSQL -JDBC driver at http://www.imaginary.com/Java/mSQL -JDBC ... 3.3 page 26 JDBC and Java 2nd edition Figure 3.3 The different kinds of JDBC drivers Type These drivers use a bridging technology to access a database The JDBC- ODBC bridge that comes with JDK 1.2...

Ngày tải lên: 12/08/2014, 21:20

... the DatabaseMetaData class, I have also added a showVersion() method that grabs database and driver version information from the DatabaseMetaData class: static public void showVersion(DatabaseMetaData ... ResultSet class, the DatabaseMetaData class relates to the Connection class (in spite of the naming inconsistency) The DatabaseMetaData class provides methods that tell you about the database for a ... handle the data JDBC provides two meta-data classes: java.sql.ResultSetMetaData and java.sql.DatabaseMetaData The meta-data described by these classes was included in the original JDBC ResultSet...

Ngày tải lên: 12/08/2014, 21:20

... forth between the database many times per minute Suddenly, the "open connection, talk to the database, close connection" model of JDBC programming becomes a huge bottleneck The JDBC Optional Package ... an instance of the ImaginaryRowSet class, a databaseindependent rowset implementation that comes with the mSQL -JDBC driver The RowSet is configured with four attributes: dataSourceName, username, ... You have only one more element of JDBC to cover—distributed transactions All database access you have dealt with so far involves transactions against a single database In this environment, your...

Ngày tải lên: 12/08/2014, 21:20

... Isolated database connectivity I've already mentioned that JDBC frees you from concerns related to portability among proprietary database APIs Unfortunately, it does not—it could not—provide us with ... the server Database connectivity becomes an issue hidden within each server object Suddenly, the presentation layer stops caring about where the database is, or if you are even using a database ... is the relational database Here you have arrived at your goal Instead of saving to a file with each change in an object, your objects update the database Although saving to a database is a lot...

Ngày tải lên: 12/08/2014, 21:20

... by far the relational database and for Java, that means JDBC 9.1 Database Transactions Transactions appear throughout this book In the first half of this book, you saw how JDBC manages transaction ... create a database persistence library, you thus need to create database- specific extensions of these two classes Here you get the chance to put your JDBC skills to use I already showed how a JDBCTransaction ... rollback() methods JDBC support requires still more work You need to create JDBC Connection instances used to talk to the database You also need to write the actual methods that talk to the database A...

Ngày tải lên: 12/08/2014, 21:20

... JDBC Core API and the JDBC Optional Package Chapter 11 JDBC Reference The java.sql package listed in Figure 11.1 contains the entire JDBC API It first became part of the core Java libraries with ... Java Example 9.5 The Abstract JDBCSupport Class with a Generic SQL Search Algorithm package com.imaginary.lwp .jdbc; import com.imaginary.lwp.BaseFacade; page 150 JDBC and Java 2nd edition import ... specifically enable you to work with a database in optimistic concurrency mode Pessimistic concurrency means that the database will lock data on read and not release that lock without a commit In other...

Ngày tải lên: 12/08/2014, 21:20

... select a subspace of the database with the specified catalog name If the driver does not support catalogs, it will ignore this request getMetaData( ) public DatabaseMetaData getMetaData( ) throws SQLException ... step should be used only when auto-commit is off DatabaseMetaData page 182 JDBC and Java 2nd edition Synopsis Interface Name: java.sql.DatabaseMetaData Superclass: None Immediate Subclasses: None ... about the database to which a Connection object is connected In many cases, it returns this information in the form of JDBC ResultSet objects DatabaseMetaData will throw a SQLException for databases...

Ngày tải lên: 12/08/2014, 21:20