nf1db is an in memory database engine with SQL and JDBC interfaces. It supports transactions, commands from the SQL-2003 standard, all major data types, a number of functions, default and null values, auto-increments, constraints, primary and foreign keys, set operations, implicit and explicit joins, nested SELECT statements, quantity limits in SELECT statements, and much more.
ERDesignerNG is a Java-based entity relationship design and database modeling tool. It has a powerful WYSIWYG interface for physical database design, supports 2D and 3D database modeling, browsing, and design, handles tables, relations, indexes, and comments, supports a central repository for all models (Model Repository), supports subject areas, supports domains, supports MySQL, Oracle, Microsoft SQLServer, PostgreSQL, and H2, creates the SQL DDL statements for schema creation, has an integrated schema version control system, can generate schema migration scripts for every change, stores the database definition as XML files for further processing, can export the database schema as GIF, BMP, JPEG, or SVG files, has an integrated reverse engineering module for existing schemas, has a build in schema compare feature, can generate schema documentation as PDF, HTML, RTF, and other formats, and supports schema conversion between different dialects.
websqlclient (WSQLC or wiskl) is a lightweight HTTP server which allows an end user to access JDBC data sources via automatically-generated data entry screens. It is designed to be used with standard Web browsers and wireless tablet PCs, and is highly configurable. It can connect to any JDBC data source. Its main purpose is to provide rapid data-model-driven development. The websqlclient data entry forms are generated by querying the database system table information, but can be configured manually. websqlclient includes a database-agnostic data loading utility (SQLLoader), a data unloading tool (SQLExport), and SQL scripting capabilities.
The RepairsLab system allows you to manage the entry and exit of equipment repair in a small workshop for repairs or service center. The application allows the printing of a "Repairs sheet" for each device and manages the state of repair. Inside the Repairs ticket, you can enter the features of the delivered and the state of repair. The system provides management of different master data for definition of states of repair, customers, types of equipment, trademarks, and models. You can print a paper "Repairs sheet" in duplicate to store paper and as a delivery receipt for the customer.
persistence4j is a small and lightweight Java object persister that uses JDBC to persist data into a relational database. The library frees you from writing the Data transfer objects - just create a POJO and simply save it. Transactional and non-transactional connections are supported and can be configured from the simple properties file.
SpiderDB is a lightweight database schema crawler library developed using Java. It is a simple library that can be used to Crawler the underlying schema of a database and return POJO objects, which makes it very easy to use. This library takes care of all the differences among the various database management systems, and makes application code free from the DBMS differences.You keep using same POJOs even if you change the underlying DBMS.
CellarBoss provides a simple way to manage your wine cellar. It lets you easily update your database and includes printable reports. It uses an embedded Derby database so no separate database server is needed. The reports are created using Jasper Reports and can be printed and saved in many formats including PDF, HTML, Open Document, and XLS.
lib4d_sql is a C library that provides the required functions (connect, prepare, execute, etc.) for writing an SQL client for 4D databases. It uses the public 4D SQL protocol, which is supported by 4D products since version 11. It is already used by the PDO_4D Open Source project, and it might be used to provide others drivers for JDBC, ADO, or ActiveRecord.