I have recently started learning hibernate and I got the following doubts
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
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I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
add a comment |
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
I have recently started learning hibernate and I got the following doubts
Correct me if I am wrong.
If hbm2ddl.auto is set to create, every time hibernate tries to interact with any table, that table will be dropped first.
Because hibernate drops a table every time it interacts with it, if I want to update a record I cannot configure hbm2ddl value as create.
java hibernate jdbc frameworks relational-database
java hibernate jdbc frameworks relational-database
asked Nov 15 '18 at 17:03
Kilarapu YethendraKilarapu Yethendra
302
302
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2 Answers
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The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
The table is not dropped and recreated every time hibernate interacts with it -- it's dropped and recreated when the SessionFactory is initialized. This usually means when your application starts up. So if you are doing some tests where you want to start with a clean database each time the application runs, setting hbm2ddl.auto to "create" would be reasonable.
For more, see the community documentation and this previous question.
answered Nov 15 '18 at 17:19
borisboris
11114
11114
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
Thanks for the quick response
– Kilarapu Yethendra
Nov 15 '18 at 17:22
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
add a comment |
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
If you will configure value as create you can update a record , but when your application is down , and you will restart it all changes will disappear.
So actually in this case its better to use update.
In case of update it only updates schema , you can define some schema sql file and use it on database side , and simply configure hbm2ddlauto as update.
Here are possible values of hbm2.ddlauto:
validate: validate the schema, makes no changes to the database.
update: update the schema.
create: creates the schema, destroying previous data.
create-drop: drop the schema when the SessionFactory is closed
explicitly, typically when the application is stopped.
edited Nov 15 '18 at 17:32
answered Nov 15 '18 at 17:24
Mykhailo MoskuraMykhailo Moskura
839113
839113
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