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Setting and Tuning of JPA Queries

page should show exactly pageSize results, and pageId represents the result page number (0

Server Configuration

number of simultaneous connections that are accepted by the server. A request for a connection

Storing JPA Entity Objects

explicitly in the persistence unit definition (in persistence.xml). Batch Store Storing a large number

ObjectDB License Agreement [ver. 2.0.4]

authorized by this agreement. 3. The free edition of the Software includes restrictions on the number

Strings in JPQL and Criteria Queries

. LENGTH - Counting Characters in a String The LENGTH(str) function returns the number of characters in

FROM clause (JPQL / Criteria API)

, since the referenced Capital objects are retrieved one at a time, i.e. the number of round trips to the database

Logical Operators in JPQL and Criteria API

Additional factory methods are available for a variant number of predicates: Predicate p3 = cb

ObjectDB License

OEM license enables distribution of ObjectDB runtime bundled in a product to an unlimited number


the number of objects that have been deleted by the query. Selective Deletion The structure

Privacy Policy

, username, full name, user name, profile picture, profile signature, company name, phone number, billing

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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