![]() Now we create record in tblGroup for The Smith Family, and then add 3 records to tblGroupClient for John, Jane, and Joshua. We already created a corporate client called "The Smith Family". tblGroupClient has a matching record for each person in the group. TblGroup.ParentClientID identifies which corporate client we are talking about. Now that we have a flexible definition of "client", we need a way to define which individuals make up a corporate entity (the members of a household, the contact people in a business, etc.) In the sample database, tblGroup and tblGroupClient perform that function. But because they are all in the one table, you can work with either kind of client when you receive donations, send mailings, write receipts, address households, run searches, or summarize sales per client. The interface uses two different forms, because that is how the user conceives of the data. tblClient has a yes/no field named IsCorporate - True for corporate entities (companies, organizations, households), False for individuals. The first step, then, is to put corporate entities and individuals into the same client table. If you need to create mailing lists for households as well as individuals, your clients must include households and persons. If you make sales to both individuals and companies, you need both corporate entities and individuals in your client table. The first step is to think clearly about what constitutes a "client" for you. It is not intended as a fully working database - just enough to illustrate how to model complex human relationships with simple database relationships. Grab the sample database for Access 2000 and later (40kb, zipped). ![]() These issues arise in any database that handles households, mailing lists, memberships, donors, sales, education, contact management - anything that involves managing groups of people. How can you receive donations from both individuals and businesses? How do you create a mailing list that is a mix of households and individuals, perhaps even committees or other groups? People in households and companies - modelling human relationships Try (Connection connection = DriverManager.getConnection(databaseURL)) As you can see, this example looks like trivial JDBC code, the only difference lies in the database URL that needs to include path to the Access database file.Microsoft Access tips: People, households, and companies - modelling human relationships Microsoft Access: Applications and Utilities String databaseURL = "jdbc:ucanaccess://e://Java//JavaSE//MsAccess//Contacts.accdb" * This program demonstrates how to use UCanAccess JDBC driver to read/write For example, you need to construct the database URL to include path of the Access database file like this: String databaseURL = "jdbc:ucanaccess://e://Java//JavaSE//MsAccess//Contacts.accdb" And here is code of the example program: package The differences lie in the database URL and Access-specific SQL syntax you can use. We will write a Java program that uses the UCanAccess JDBC driver to connect to this database, insert a row and select all rows from the table Contacts.You can use JDBC API as normal (see Connect to a database with JDBC). This path will be used in database URL. The database file is located at e:\Java\JavaSE\MsAccess\Contacts.accdb. Java JDBC Example with Access DatabaseSuppose that we have an Access Database 2007 contains a table Contacts with the following fields: Now, let’s see how to write a simple Java program to read/write a Microsoft Access database. ![]() The version numbers here may differ than the latest versions you downloaded. In case you don’t use Maven, you have to download UCanAccess distribution and add the following JAR files to the classpath: It also provides Maven dependencies so you can integrate it in your existing projects quickly.To use UCanAccess JDBC Driver for Access, add the following dependency information in your project’s pom.xml file: UCanAccess supports various Access formats: 2000, 2002/2003, 2007, 2010/2013/2016 (Access 97 is supported for read-only).UCanAccess is open-source and implemented entirely in Java so it can be used across platforms (Windows, Mac, Linux…). Java JDBC Driver for Microsoft Access DatabaseThere are several third-party JDBC drivers out there for Microsoft Access database, and we recommend UCanAccess - a pure Java JDBC Driver for Access that allows Java developers and JDBC client programs to read/write Microsoft Access databases. And your Java code still uses JDBC API as normal. However JDBC ODBC driver is no longer supported so you need to use a third-party JDBC driver for Microsoft Access. In the early days of JDBC, you can connect to an Access database via JDBC ODBC driver provided by JDK. This JDBC tutorial guides you how to develop a Java program that connects to a Microsoft Access Database. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |