Since the graph is stored in the database tables it has a schema. This is unlike the graphs created with a flexible schema, where the data is copied from the source tables to property graph schema tables as des
India's financial services leader taps highly available, secure Oracle Exadata workloads on OCI using data lakes and analytics in Azure.
Although in Oracle Database 11g, analytic workspaces can now also take advantage of materialized views and query rewrite. Firstly we need to get a better appreciation of these two features within the database. Throughout the white paper, it is assumed that the reader is familiar with data ...
ALL_USER_VIEWS ALL视图描述用户可以访问的视图 USER_views USER视图描述用户所拥有的视图 在oracle中很多视图都是这样来命名的b比如 索引，表空间 等都是这样的，所以记住规律对于以后的学习是很有帮助的。
the workload of the database administrator is eased and the user no longer needed to be aware of the summaries that had been defined. Instead, the end user queries the tables and views at the detail data level. The query rewrite mechanism in the Oracle server automatically rewrites the SQL...
Analytic Views: An In-Database Semantic Layer Oracle analytic views are a feature of every edition of the Oracle Database. Using analytic views, a subject matter expert can fully define how a data set (a collection of tables) should calculate and present data to applications an...
“Exadata X10M redefines what a cloud database platform should truly deliver. Trying to run Oracle Database on any other platform than Exadata X10M is basically equivalent to running the software in degraded mode on un-optimized, subpar infrastructure—which can produce inferior business results. ...
The oracle data dictionary is the heart of the Oracle database management system. The data dictionary holds all the necessary information for the database to function. Oracle needs this metadata to verify users, objects, privileges, and roles in the database. Understanding the data dictionary ...
--forceowner : Force ora2pg to set tables and sequences owner like in Oracle database. If the value is set to a username this one will be used as the objects owner. By default it's the user used to connect to the Pg database that will be the owner. --nls_lang code: Set the...
Oracle错误:database not openqueries allowed on fixed tablesviews only dba用户无法对数据库进行查询操作 1、查找阻塞的文件 SQL>alterdatabaseopen; 2、执行删除操作 SQL>alterdatabase datafile'/u01/app/oracle/product/11.2.0/db_1/dbs/C:ORACLEPRODUCT11.2.0DBHOME_1ORADATACOSTCTL3COSTCTL_TBS.DBF'offlin...