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drop a column from table

Hi, I want to drop one column from my database table suppose i have 3 column (id, name, address) now i want to drop address. then what will be the query or procedure.. Bimal Bimal kumar dalei Just remove the field from the entity class. See Automatic Schema Evolution. Space in the database file

@ElementCollection of type enum

are more efficient than strings (take less storage space and faster to save and load). You can easily solve

Server closes if large query runs out of memory

space in any scenario. Regarding a query that returns too many objects, consider limiting the number

Eclipse plugin problem (using ObjectDB as a separate bundle)

is - it seems that you have an extra space after the 'a' in java which is not allowed. >> Alternatively, I could import the project

Performance tuning, best practices

directories="5" files="20" disk-space="5mb" /> </dir> </user> <user username="user1" password="user1

@MappedSuperclass and @Transient not working as I expected

entity classes) do not store data just schema. Usually data in ObjectDB consumes much less space than the same data in a JPA/RDBMS combination. support Support

100% CPU when using multiple BETWEEN

so on DB with 2800 records) throws a "java.lang.OutOfMemoryError: Java heap space" exception. Emil

ObjectDB 2.3.0

). Improved persisting byte[] by reducing required storage space. Removed a shutdown hook that leads

ODB-FileWriter holds unecessary entity reference after transaction and entity manager are closed

space limitations. Why the entity DBVectorStepBlockCollectionImpl is still hold by ObjectDB? Best wishes

Error during closing an entity manager

here with this issue and not with issue #2089, which has a separate space. Apparently the new build

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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