Technology Questions

Q:

What is the maximum size of a file that can be uploaded using PHP and how can we change this?

Answer

By default the maximum size is 2MB. and we can change the following
setup at php.iniupload_max_filesize = 2M

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Subject: PHP

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Q:

What is MultiThreading?

Answer

Executing two or more blocks (threads) of a program at a time is called MultiThreading.

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Subject: Java

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Q:

What are fact tables and dimension tables?

Answer

Business facts or measures and foreign keys are persisted in fact tables which are referred as candidate keys in dimension tables. Additive values are usually provided by the fact tables which acts as independent variables by which dimensional attributes are analyzed.


Attributes that are used to constrain and group data for performing data warehousing queries are persisted in the dimension tables.


 

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Q:

What divisions, sections and paragraphs are mandatory for a COBOL program?

Answer

IDENTIFICATION DIVISION and PROGRAM-ID paragraph are mandatory for a compilation error free COBOL program.

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Q:

What is XML Namespace?

Answer

An XSL sheet or a document may have duplicate elements and attributes. Therefore, the XML namespaces define a way to distinguish between duplicate element types and attribute names.


An XML namespace is a collection of element type and attribute names. It is a URI due to which any element type or attribute name in an XML namespace can be uniquely identified. 


It consists of two parts : the name of the XML namespace and the local name.


e.g.: xmlns: h=”https://www.abc.com”


After this, you can write


<h:table>


……..


</h:table>


to associate the table with the declared namespace. 

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Subject: Web Technology

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Q:

Explain about various caches available in Data Integrator

Answer

  •  NO_CACHE – It is used for not caching values.

  •  PRE_LOAD_CACHE – Result column preloads and compares the column into the memory, prior to executing the lookup.

  •  PRE_LOAD_CACHE is used when the table can exactly fit in the memory space.

  •  DEMAND_LOAD_CACHE – Result column loads and compares the column into the memory when a function performs the execution.

  •  DEMAND_LOAD_CACHE is suitable while looking up the highly repetitive values with small subset of data.

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Q:

How do we measure progress in Data Integration?

Answer

Look for the existence of the following items:


- Generic Data Models


- An Enterprise Data Platform


- Identify the Data Sources


- Selection of a MDM Product


- Implementation of a Customer Master Index or appropriate alternative

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Q:

What are the dialog boxes that are supported in android? Explain.

Answer

AlertDialog : An alert dialog box supports 0 to 3 buttons and a list of selectable elements, including check boxes and radio buttons. Among the other dialog boxes, the most suggested dialog box is the alert dialog box.


ProgressDialog: This dialog box displays a progress wheel or a progress bar. It is an extension of AlertDialog and supports adding buttons.

DatePickerDialog: This dialog box is used for selecting a date by the user.

TimePickerDialog: This dialog box is used for selecting time by the user.

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