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Which database level is closest to the users?
External database level is closest to the users.
I need to Map an E-R diagram to a relational schema
From SAD to OOAD (Structured Analysis and Design (SAD) to Object Oriented Analysis and Design (OOAD). We will find here how we can map various models in SAD to different model
i am not clear with the climetic condition of the north indian plain. can u plz explain it for me
Data Warehousing & Mining 1. What is the concept of knowledge discovery in database? 2. Describe the following types of Multidimensional Data Models. • Stars, Snowflakes and
List and also explain the dissimilar stages of DDLC ?
which component of DBMS can be embedded in a program? The data manipulation language (DML) is a component which is embedded in a program.
What is a cascading update? Referential integrity constraints needs that foreign key values in one table correspond to primary key values in another. If the value of the primar
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
why are older data base model are being replaced by new data model
These are the binary operations; i.e., each is applied to two relations or sets. These two relations can be union compatible excluding in case of Cartesian product. Two relations R
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