Technology Questions

Q:

What are the differences between GET and POST methods in form submitting?

Answer

On the server side, the main difference between GET and POST is where the submitted is stored. The $_GET array stores data submitted by the GET method. The $_POST array stores data submitted by the POST method.

On the browser side, the difference is that data submitted by the GET method will be displayed in the browser’s address field. Data submitted by the POST method will not be displayed anywhere on the browser.

GET method is mostly used for submitting a small amount and less sensitive data.
POST method is mostly used for submitting a large amount or sensitive data.

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Subject: PHP

0 2201
Q:

What CICS command are used to read a VSAM KSDS sequentially in ascending order?

Answer

READNEXT reads the next record from a browse operation for any of the three VSAM files.

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0 2198
Q:

What is Aggregate Functions?

Answer

Aggregate functions perform a calculation on a set of values and return a single value. Aggregate functions ignore NULL values except COUNT function. HAVING clause is used, along with GROUP BY, for filtering query using aggregate values.


Following functions are aggregate functions. 


AVG, MIN CHECKSUM_AGG, SUM, COUNT, STDEV, COUNT_BIG, STDEVP, GROUPING, VAR, MAX. VARP

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Subject: SQL

0 2195
Q:

Client code having direct access to internal data is called

A) Encapsulation B) DataHiding
C) Polymorphism D) DataAbstraction
 
Answer & Explanation Answer: B) DataHiding

Explanation:

Client code must use setters and getters to access internal data in DataHiding

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Filed Under: Java

0 2195
Q:

Data structure suitable for an application discussed in?

A) procedural design B) architectural design
C) data design D) interface design
 
Answer & Explanation Answer: C) data design

Explanation:
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1 2193
Q:

What is a view?

Answer

It is virtual table which is defined as a stored procedure based on one or more tables.

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Subject: Oracle

0 2187
Q:

What is the importance of Doctype in HTML?

Answer

Doctype tag is not a HTML tag, it is just an instruction that is passed to the web browser to check for the information that is being provided by the markup language in which the page is written. Doctype is sometimes referred as Document type definition (DTD) that describes some rules that has to be followed while writing the markup language so to make the web browser understand the language and the content correctly. Doctype is very important to be placed in the beginning of the HTML and before the <HTML> tag to allow easy rendering of the pages that are used.

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Subject: Web Technology

1 2186
Q:

Echo vs print statement

Answer

echo() and print() are language constructs in PHP, both are used to output strings. The speed of both statements is almost the same.


echo() can take multiple expressions whereas print cannot take multiple expressions.


Print return true or false based on success or failure whereas echo doesn't return true or false.

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Subject: PHP

0 2185