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Define identify relationship?
Identifying relationship: An identifying relationship means in which the child table cannot be uniquely recognize without the parent. For example, you have this situation in the intersection table used to resolve a many-to-many relationship whereas the intersecting table's Primary Key is a composite of the left and right (parents) table's Primary Keys
Hello.I have database access assignment which consist of creation Form, Subform, Calculation, Macros
Whta is the advantage of the database management approach? The advantage of the database management approach is data is integrated and can be accessed by multiple programs.
Distributed And Client Server Databases Introduction This unit tells the distributed database systems which are primarily relational and one important execution model: the
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
external and internal mapping with examples
Question 1 List and explain various Normal Forms. How BCNF differs from the Third Normal Form and 4th Normal forms? Question 2 Describe the concepts of Structural Semantic Da
I want a script that will run, and update my virtual machine's LAN settings (proxy server and port), and also re-configure the Firefox User Agent. I want a script that will run,
What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha
Support by Adding Indexes Multiple indexes can be used to access a data file by multiple access paths. In such a scheme only single copy of the data is consider, only the numbe
What are the various properties of Relational tables? Relational tables have 6 properties: 1. Each row is unique. 2. Column values are of the same kind. 3. Values are
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