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Can we delete data element, which is being used by table fields.
No we cant delete data element.
explain the level architectures of the database management system
What is Outer join? They can be employed while we want to keep all the tuples in R, or all those in S or all those in both relations in the result of the JOIN in spite of of w
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Design Of Distributed Databases: The distributed databases are mainly relational at local level. So a local database schema is the similar as that of a centralised database design
Consider the ER schema below for the MoneyMaking supermarket chain problem. Translate the given ER schema into SQL CREATE TABLE statement.
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Define instance and schema? Instance: Collection of data stored in the data base at a certain moment is Schema: The overall design of the data base is known as the data base
A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, c
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
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