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Though all the ABAP/4 Dictionary Structures that exists in the structure of the LDB, being described in Database Program, we are explaining the Dictionary Structures in the Report. What is the reason for such declaration?
By declaring so we are giving work areas for data passing among Logical Database and Report. In addition, the logical database configures the selection screen depending on the selection of database tables.
what do you mean by consistency in rdbms?
wh
For every n-ary relationship type R where n>2, we make a new table S to represent R. We contain as foreign key attributes in s the primary keys of the relations that show the parti
What is advantage of two-way association? Two-way association advantages are following: a) Independent of the classes. b) Useful for existing predefined classes that are
What is an object design? Object design is a very interactive method, which decides the relationship among objects, classifies operations on classes, determines overall system
explain equi-join using illustration
Physical Database Design Issues The database design includes the process of logical design with the use of E-R diagram, normalisation, etc., followed by the physical design.
define anomalies and different types of anomalies with example
Explain the concepts of relational data model? Relational Data Model - The relational model was first introduced through Prof. E.F. Codd of the IBM Research in the year 1970
Define the terms entity, attribute, role and relationship between the entities, giving examples for each of them. Ans: Entity: An entity is a "thing" or "object" in th
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