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Describe Application programming interface?
Application Programming Interface - Commercial SQL implementations take one of the two primary techniques for involving SQL in a programming language - embedded SQL and application program interface (API). In the application program interface approach, the program communicates along with the RDBMS using a set of functions known as the Application Program Interface (API). The program passes the SQL statements to the RDBMS using API calls and uses API calls to retrieve the results. In these techniques, the precompiler is not needed.
What are domain constraints? A domain is a set of values that might be assigned to an attribute .all values that appear in a column of a relation must be taken from the similar
Database Errors: An error is said to have occurred if the implementation of a command to manipulate the database cannot be successfully finished either due to inconsistent data or
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Problem 1. Describe the Oracle Architecture with a neat labeled diagram, Also explain the individual components of the Architecture. 2. Write about the following Oracle 9i o
Using the concepts defined previous, we have identified that strong entities in COLLEGE database are FACULTY, STUDENT, COURSE and DEPARTMENT. This database also has one weak entity
a) Suppose we updated the catalog tables in real time, that is, after every update, insert, or delete SQL statement were executed-rather than only running RUNSTATS once every few
How does a query tree represent a relational algebra expression? Ans: This includes transforming an initial expression (tree) into an equivalent expression (tree) that is
Creation of Indexes Automatically: When a primary key or Unique constraint is show in a table definition then a unique index is formed automatically. Manually: User can
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
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