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Explain DML with some examples?
DML - Data Manipulation Language: statements used for managing data within schema objects. Some examples:• SELECT - retrieve data from the a database• INSERT - insert data into a table• UPDATE - updates existing data within a table• DELETE - deletes all records from a table, the space for the records remain• MERGE - UPSERT operation (insert or update)• CALL - call a PL/SQL or Java subprogram• EXPLAIN PLAN - explain access path to data
I need some help with my normalization database homework.
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
what is natural join?
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The figure below depicts the conceptual diagram of a banking system. (a) Describe one example relevant to the system in figure, for each of the 4 types of enterprise appl
Ask qu. Write a XML with database with book details (Book ID, Title, Author, subject, published year, language, vendor, and price).estion #Minimum 100 words accepted#
properties of derirable decomposition
Explain the two types of participation constraint. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
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