postgresql
is there any benefits for using ORDBMS instead RDBMS behind JPA
Today I reviewed postgreSQL wiki and I found it is a ORDBMS (object-relational database management system), so I want to know is there any benefits for using postgreSql (RDBMS) behind the JPA (hiberna[详细]
2023-04-10 05:38 分类：问答Postgres constraints order of writing to and deleting from tables
I am working in a postgresQL database that has 200+ plus开发者_JAVA技巧 tables, some with many (15+) constraints that are references to other tables.I was able to list all of the constraints from the[详细]
2023-04-10 03:51 分类：问答Is there a way or technology to implement database resource allocation based on user?
Typically, when platforms want to provide database resource to user (developer) for applications development, they use limit database access APIs to restrict behaviors of the application, in order to[详细]
2023-04-10 01:33 分类：问答Postgres is not taking System Resources
I am restoring my database tomy new database in postgresql in linux 2.6.18 kernel. My problem is restoring does not happenquickly, And even system has 90 % free resources.[详细]
2023-04-09 23:40 分类：问答org.postgresql.util.PSQLException: ERROR: out of shared memory
I am calling a function having more than 200 DROP Table Statements using JAVA and I am getting org.postgresql.util.PSQLException: ERROR: out of shared memory.[详细]
2023-04-09 23:30 分类：问答Alternative for using Intersect operator in my sql query
I have 2 tables with many to many cardinality between them. So by normalization I have created this :[详细]
2023-04-09 22:14 分类：问答How to get maximum value from output of SQL query
I have two tables: task_runs and integer_values. I am running a query to get this output: task_namestart_timevalue[详细]
2023-04-09 21:42 分类：问答PostgreSQL regexp with case-insensitive parts
Using PostgreSQL v.8.2.14, I\'m trying to build a regexp with several branches, some of which are case-insensitive, the others not.[详细]
2023-04-09 19:19 分类：问答Ruby on Rails timestamp is being converted into numeric by PostgreSQL on Heroku
I will start out by saying there is a question similar to mine: heroku Postgres error - operator does not exist timestamp without timezone = integer[详细]
2023-04-09 19:12 分类：问答Postgres select all columns but group by one column
I have a simple table with a unit_id oid, time timestamp, diag bytea. The primary key is a combination of both time and unit_id.[详细]
2023-04-09 18:58 分类：问答
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