159 | Database ExplorerObjectDB Database Explorer is a visual GUI tool for managing ObjectDB databases. It can be used to view data in ObjectDB databases, execute JPQL and JDOQL queries and edit the content of databases ... to the Database Opening a Database Connection To open a local database file in embedded mode use the File > Open |
157 | Database Management SettingsThe <database> configuration element specifies back end (database engine) settings ... <database> element: <database> <size initial="256kb" resize="256kb" page="2kb" /> <recovery ... ="32mb" programs="500" /> <extensions drop="temp,tmp" /> </database> The <size> element <size |
153 | Database Doctor database file Checks a given ObjectDB database file, verifies that it is healthy and valid ... of a corrupted ObjectDB database file Repairs a corrupted ObjectDB database file by creating a new fresh database file and then copying all the recoverable data in the corrupted database file |
149 | Database Transaction Replayer can apply recorded database operations on a matching database backup (if available). This ability is useful for two different purposes: It enables recovery from a database failure by replaying ... & Recording Files When recording is enabled, ObjectDB maintains for every database file a recording |
144 | Database ServerObjectDB Server is a tool that manages ObjectDB databases in a separate dedicated process, making these databases accessible to client applications in other processes including ones on other remote ... are: The ability to access and use databases from different processes simultaneously. The ability to access |
139 | Database Connection using JPA A connection to a database is represented by an EntityManager instance, which also provides functionality for performing operations on a database. Many applications require multiple database connections ... database connection, using a separate EntityManager instance, for every HTTP request. The main role |
139 | Database Replication and Clustering, the same database is managed on multiple machines (nodes), possibly in different geographic locations ... master-slave replication, the master node manages the main (master) database, which supports Read / Write operations. The other (slave) nodes in the cluster manage identical copies of the same database |
139 | ObjectDB Object Database Features support of the JPA and JDO APIs. Fundamental features of relational databases (e.g. primary keys, derived ... Databases are also supported by ObjectDB. The combination of Object Database features with Relational Database features brings you the best of both worlds. Capabilities & Scalability ObjectDB |
136 | Chapter 5 - Database Tools and UtilitiesDescribes the ObjectDB object database tools - the Explorer, the Server, the Enhancer, the Doctor and the Replayer. |
134 | CRUD Database Operations with JPAGiven an EntityManager, em, that represents a JPA connection to the object database, we can use it to store, retrieve, update and delete database objects. Storing New Entity Objects The following code fragment stores 1,000 Point objects in the database: em.getTransaction().begin(); for (int |
