Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the following functions of Oracle with suitable examples: (i) To_Char( ) (ii) Count( ) (iii) Trim( ) (iv) Length( )
Ans: (i) To_char( ): The TO_CHAR function converts a DATETIME, number, or NTEXT expression to a TEXT expression in a specified format. This function is typically used to format output data.
(ii) Count( ): The COUNT function returns the number of rows in a query. The syntax for the COUNT function is: SELECT COUNT (expression) FROM tables WHERE predicates;
(iii) Trim( ): In Oracle/PLSQL, the trim function removes all specified characters either from the beginning or the ending of a string. The syntax for the trim function is: trim( [ leading | trailing | both [ trim_character ] ] string1 ) leading - remove trim_string from the front of string1. trailing - remove trim_string from the end of string1. both - remove trim_string from the front and end of string1.
(iv) Length( ): In Oracle/PLSQL, the length function returns the length of the specified string. The syntax for the length function is: length(string1) string1 is the string to return the length for. If string1 is NULL, then the function returnsNULL.
What is Object Oriented model? This model is based on collection of objects. An object has values stored in instance variables with in the object. An object also having bodies
what is object-identity
External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
Describe the objective of Structural Diagrams The main objective of structural diagram is to visualize, construct, specify and document static aspects of a system. Their eleme
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
Determine the Persistent object Persistent object can be stored in one of the following: Files Cheap, permanent, simple storage Low level (Write, Read) Ap
Describe log based recovery The most usably structure for recording data base modification is the LOG the log is a sequence of log records recording all the update activities i
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd