Horizontal scaling (or scaling out) means the scaling of databases by adding more nodes to handle database queries. Different RDBMS products offer different ways of scaling out, includingreplicationand databasesharding. With replication, the same data is stored across multiple nodes. This enables the...
SchemaSpy incorporates knowledge about best practices in database design. It can locate and report anomalies such as missing indexes, implied relationships, and orphan tables. Community Welcome to the SchemaSpy community! Just reading this file or using the tool means that you're a part of our ...
Ora2Pg can be used for anything from reverse engineering Oracle database to huge enterprise database migration or simply replicating some Oracle data into a PostgreSQL database. It is really easy to use and doesn't require any Oracle database knowledge other than providing the parameters needed ...
Currently such data type conversion is supported when copying between tabular data. Hierarchical sources/sinks are not supported, which means there is no system-defined data type conversion between source and sink interim types. This feature works with the latest dataset model. If you don't see ...
For example, your business might have an application with a table with a high volume of updates. Initially, the table was created with a fill factor of 100, which means the pages are completely filled when data is inserted. Over time, as the statuses are upda...
pid in (select pid from pg_locks where database=(select oid from pg_database where datname=current_database()) and relation in ((nsp||'.'||from_tab)::regclass, (nsp||'.'||to_tab)::regclass) ) and pid<>pg_backend_pid(); ...
Free space means the number of bytes in completely free extents minus a safety margin. Even if free space displays as 0, it may be possible to insert rows as long as new extents need not be allocated. For NDB Cluster, DATA_FREE shows the space allocated on disk for, but not used ...
Because a view is based on other objects, a view requires no storage other than storage for the definition of the view (the stored query) in the data dictionary. How Views Are Used Views provide a means to present a different representation of the data that resides within the base tables....
resides. 0 means theInnoDBsystem tablespace. Any other number represents either afile-per-tabletablespace or a general tablespace. This identifier stays the same after aTRUNCATE TABLEstatement. For file-per-table tablespaces, this identifier is unique for tables across all databases in the instance....
SchemaSpy incorporates knowledge about best practices in database design. It can locate and report anomalies such as missing indexes, implied relationships, and orphan tables. Community Welcome to the SchemaSpy community! Just reading this file or using the tool means that you're a part of our ...