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Which operator is Cartesian product in relational algebra?
Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
What are the advantages and disadvantages of using a database system. Sol. Advantages of Database System (DBMS) : (1) Data Redundancy and Inconsistency: Since differen
Database Manager It is the interface among low-level data, queries and application programs. Databases typically need a large amount of storage space. It is kept on disks, as
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
In this exercise you will create ten records, each containing the following fields: student name, class: Freshman, Sophomore, Junior or Senior, Major: Liberal Arts or General Sci
Ask Write the SQL code that will create the table structure for a table named EMP _1. This table is a subset of the EMPLOYEE table. The basic EMP_1 table structure is summarized in
What is the difference between the function module and a normal ABAP/4 subroutine? In contrast to normal subroutines function modules have uniquely exact interface. Declaring da
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
State the terms Designing the database and Normalization Designing the database: Out of the ERD we have formed, it is very easy to verify the tables, the attributes which the
Need for Client Server Computing- Client/Server (C/S) architecture includes running the application on multiple machines in which every machine with its component software tackles
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