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What is the difference between relationship type and relationship instance in database?
In a database, a relationship type defines the abstract structure and constraints of how entities are related, including cardinality and participation rules. In contrast, a relationship instance represents a specific occurrence of that relationship type, linking actual records in the database. Essentially, the relationship type serves as a blueprint, while the relationship instance is the tangible connection between entities in the data.
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What is the Difference between instance and physical database?
The terms instance and database are closely related, but don't refer to the same thing. The database is the set of files where application data (the reason for a database) and meta data is stored. An instance is the software (and memory) that Oracle uses to manipulate the data in the database. In order for the instance to be able to manipulate that data, the instance must open the database. A database can be opened (or mounted) by more than one instance, however, an instance can open at most one database.
What is the difference between cardinality and degree of relationship in relations in database management?
bal amar
What is Difference between real time database and simple database?
the difference is about the transactions. the normal database is not included deadline, but the real time database is.
What is the difference between database and database administrator?
Database is the data stored in the server and Database administrator is the person who designs the database.
Difference between database and database instance?
In general, a database is a collection of related data. In more specific terms, a database is typically a collection of computer files, usually stored on disk, used to contain and manage this data. The logical structure of a database (as organized in tables, indexes, views, etc.) does not necessarily correspond directly to its physical structure (the data files, transaction log files, etc.). A database instance is the instantiation of memory structures and processes by a database management system manages the logical and physical structures and the data organized and stored therein. An application program must connect to and interact with the database instance in order to insert, retrieve, modify, and/or delete data stored in the database.
What is the Difference between relation schema and relation instance?
difference between relation sehema and relation instance in dbms
What is the difference between relation and relationship in database?
Relation: In Database a relation represents a table or an entity that contain diffrenet attributes.An Entity constructs a relation(table) in DBMS . Relationship: In Data base relationship is that how the two entities are connected to each other ,i.e what kind of relationship type they hold between them.Primary/Foreign key is used to specify or hold this relationship. By Tanzeel Ur Rahman Bhatti
Distinguish between a relation and a relationship in database?
Relation is one record in the database or a tuple. Relationship is that how tables are connected to each other.
What are difference between cache database and sql database?
CACHE is multidimensional and postconsonantal database and its supporting scripting
An association between entities is known as?
Database
What is the difference between database management and documents management systems?
differences between document management and database technology
What is the difference between a database management system and a database?
DBMS: Set of software applications combined w/ a database
