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Product-specific Packages
The Oracle and different Oracle tools are supplied with the product-specific packages which help you to build the PL/SQL-based applications. For illustration, the Oracle is supplied with a lot of utility packages, a few of that are highlighted below.
DBMS_STANDARD
The Package DBMS_STANDARD gives language facilities which help your application interact with the Oracle. For illustration, the procedure raise_application_error issue a user-defined error messages. In that way, you can report the errors to an application and evade returning the unhandled exceptions.
DBMS_ALERT
The Package DBMS_ALERT use the database triggers to alert an application when the definite database values change. The alerts are asynchronous (i.e., they operate separately of any timing mechanism) and transaction based. For illustration, a company may use this package to update the value of its investment portfolio as the new stock and bond quotes arrive.
Write SQL queries to solve the following specifications. Include the query AND THE OUTPUT. A screen dump of the output is acceptable. Show as many rows as you can. A screen dump i
Dynamic SQL: The Most PL/SQL programs do a predictable, specific job. For illustration, a stored procedure may accept an employee number and salary increase, and then update t
Varrays versus Nested Tables The Nested tables are differing from varrays in the following ways: 1) Varrays have a maximum size, while nested tables do not. 2) Varrays are
Authorisations - Privileges As relational theory is silent on the issue of authorisation, it offers nothing with which SQL's vast edifice in support of what it calls privilege
Question: a) Given the following relation: Location(loc_id, bldg_code, room, capacity) The underlined field is a primary key. (i) Write a PL/SQL program using the impl
SQL Functions The PL/SQL uses all the SQL functions involving the following aggregate functions that summarize the whole columns of the Oracle data: GROUPING, AVG, COUNT, STDDE
Other monadic - SQL In 2VL there are just 4 (2 2 ) monadic operators, of which negation is really the only "useful" one. When a third truth value is introduced we have 27 (3 3
Using PRIOR and NEXT The PRIOR(n) returns the index number that precede index n in a collection. The NEXT(n) returns the index number which succeed the index n. If n has no pr
i NEED TO CREATE 3 guiS IN pl/sql sERVER PAGE FORM
DBMS: The answer to this question is of course given in of the theory book. This book is concerned with SQL DBMSs and SQL databases in particular. Soon we will be looking a
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