the schema can be termed either conceptual or logical or physical.
But mostly speaking, the term schema is used to refer to a logical structure.
tablespace,segment,extent,oracle blocks.. are the logical schema of a database
A database schema is described in a formal language supported by the database management system (DBMS). In a relational database, the schema defines the tables, the fields in each table, and the relationships between fields and tables. Schemas are generally stored in a data dictionary. Although a schema is defined in text database language, the term is often used to refer to a graphical depiction of the database structure Levels of database schema 1. Conceptual schema, a map of concepts and their relationships 2. Logical schema, a map of entities and their attributes and relations 3. Physical schema, a particular implementation of a logical schema 4. Schema object, Oracle database object 5. Schema is the over all structure of the database
Oracle is relational DataBase
Oracle is one of the popular database and DBA (DataBase Administrator) is the person who maintain the database (install oracle software, create,setup,maintain database)
A relational database is a type of database design. Oracle is a brand of database. You can create a relational database using Oracle. You can also create relational databases using other database applications.
Oracle is Relational database management System(RDBMS).
Differences: Oracle Database Appliance is not Exadata. Exadata is a pre-configured combination of hardware and software that provides an infrastructure solely for running Oracle Database. Oracle Database Appliance (ODA) is an integrated highly available (HA) database and applications system in a single box. To learn more about data science please visit- Learnbay.co
Oracle is a database corporation that has many products such as Database, BI and ERP
if maintain the database structure in six different location and we cannot change this file.
Includes Oracle NoSQL Database, Oracle Multitenant, Oracle Real Application Clusters, Oracle Partitioning, Oracle Advanced Compression, Oracle OLAP, Oracle Machine Learning, Spatial and Graph, Database Lifecycle Management Pack, Oracle Enterprise Manager Control, and more To learn more about data science please visit- Learnbay.co.
PL usually stands for a file extension for PERL. SQL is a database structure and querying LANGUAGE. Oracle is a software manufacturer that creates TOOLS for its own SQL database engines.
There are several different ways. If you are going between one Oracle database and another Oracle database you can create a database link. Another method would be an Oracle export to flat file and then a import to another database. This all depends on the type of database you are trying to load the data into.