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Forum
12

Refresh data in application after database data has changed

my application and I want to add a person with the same national number as a person already in the database, my program has to block the creation. So far so good. Now... I have a person in my database ... in the database explorer when the program is running and I want to recreate the person, he keeps
Manual
12

Deleting JPA Entity Objects

Existing entity objects can be deleted from the database either explicitly by invoking the remove ... from the database it has to first be retrieved (no matter which way) and then in an active ... (); The entity object is physically deleted from the database when the transaction is committed. Embedded
FAQ
12

Is ObjectDB scalable? What are its limitation?

ObjectDB is highly scalable and can manage efficiently databases in a wide range of sizes, from ... supports: Database file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity classes per database file. Up to 2,147,483,648 indexes per database file
Tutorial
12

Step 4: Add a Servlet Class

ServletException, IOException { // Obtain a database connection: EntityManagerFactory ... { // Close the database connection: if (em.getTransaction().isActive ... is retrieved from the application scope attribute, and then an EntityManager (representing a database
Tutorial
12

Step 4: Add a Servlet Class

{ // Obtain a database connection: EntityManagerFactory emf = (EntityManagerFactory ... ") .forward(request, response); } finally { // Close the database ... , and then an EntityManager (representing a database connection) is constructed. If a new guest
FAQ
12

What is the Java Persistence API (JPA)?

The Java Persistence API (JPA) is a standard API for accessing databases from within Java applications. The main advantage of JPA over JDBC (the older Java API for interacting with databases ... . Using plain old Java objects (POJO) to represent persistent data can significantly simplify database
FAQ
12

Which API should I use - JPA or JDO?

code. When to prefer JDO JDO might be preferred when portability to other object databases is more important than general portability to both object and relational databases. JPA is designated to be used mainly with relational databases. ObjectDB is the only object database that supports JPA
Forum
12

_UserException: Attempt to open a database file '...' that is currently in use

and rerunning it the this issue occur. The app was built on javafx though In embedded mode the database cannot be accessed at the same time by more than one process. Make sure that the database file
Forum
12

Database connection url

I'd like to run a database called db1.odb on port 6136, and simultaneously open it in the explorer. I left the conf file set as:          database named db1.odb created under db-files/ nor can I connect
Issue
12

Database File Encryption

ObjectDB supports encryption of client-server communication over the network using SSL. Encryption of data in database files is less commonly used, since it slows the database. In addition, when necessary, external encryption can be used (e.g. at the operating system level