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In a Hierarchical model of data records are organized ?
In the hierarchical model of data records are organized as Tree structure.
What is Data Storage? The storage structures and access methods used by database system are specified by a set of explanation in a special type of DDL called data storage-defin
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
What is recursive closure? Why is it not possible to describe this operation in relational algebra? Recursive closure is applied to recursive relationship. An instance of rec
What is Oracle databse structure? Oracle database structure: The relational model has three main aspects: Structures: Structures are well-defined objects which store th
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What is the archtetype/instance pattern? The archetype/instance pattern happens when one entity tracks occurrences of another entity. A common example is the relationship among
Explain Hierarchical Model ? Hierarchical Model - It was established to model several kinds of hierarchical organizations which exist in the real world. It uses tree structur
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
#question. acompani datdbase needs to store information about employees (identified by a social security number,with salary and phone as attributes) and departments (identified by
write on the various type of relationalkey
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