Technology Questions

Q:

What is user Account in Oracle database?

Answer

An user account is not a physical structure in Database but it is having important relationship to the objects in the database and will be having certain privileges. 95. When will the data in the snapshot log be used? - We must be able to create a after row trigger on table (i.e., it should be not be already available) After giving table privileges. We cannot specify snapshot log name because oracle uses the name of the master table in the name of the database objects that support its snapshot log. The master table name should be less than or equal to 23 characters. (The table name created will be MLOGS_tablename, and trigger name will be TLOGS name).

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Q:

What is iphone architecture?

Answer

It is similar to MacOS X architecture


It acts as an intermediary between the iPhone and iPod hardware an the appearing applications on the screen


The user created applications never interact directly with the appropriate drivers, which protects the user applications from changes to the hardware. 

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Q:

What do you know about Intents?

Answer

- Notification messages to the user from an Android enabled device can be displayed using Intents.


- There are two types of Intents - Explicit Intent, Implicit Intent.


 


Implicit Intent:


- In case of Implicit Intent, an intent is just declared. 


- It is for the platform to find an activity that can respond to it.


- Since the target component is not declared, it is used for activating components of other applications.


 


Explicit Intent


- Explicit intent specifies the particular activity that should respond to the intent. 


- They are used for application internal messages.

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Q:

Explain the correct way to manage Outlets memory?

Answer

Create them as properties in the header that are retained. In the viewDidUnload set the outlets to nil(i.e self.outlet = nil). Finally in dealloc make sure to release the outlet.

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Q:

How will you define an abstract class?

Answer

An abstract class is defined with the keyword abstract Eg:
public abstract class MyClass { }

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Subject: Java

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Q:

Who are BI systems intended for?

Answer

For any member of the company who makes decisions based on transactional systems' data. Such systems may be oriented to different levels (analysts, managers, directors, auditors, etc.), providing different kinds of information in each case.

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Q:

What is the role of compatibility that is used in Android?

Answer

The compatibility is defined in terms of android compatible devices that run any application. This application is written by third party developers using the Android platform that comes in the form of SDK and NDK. There are many filters that are used to separate devices that are there to participate in the compatibility mode for the Android applications. The devices that are compatible require the android to approve it for their trademark. The devices that are not passes the compatibility are just given in the Android source code and can use the android trademark. The compatibility is a way through which the user can participate in the Android application platform. The source code is free to use and it can be used by anyone .

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Q:

Explain how synchronization takes place with Blackberry Technology .

Answer

The handheld device is used as a network device, which always connected to the data account of the user via redirector software. The software is installed on the BlackBerry Enterprise Server. The communication between the software, BE Server and the hand held device’s software is always a two-way street. BES immediately updates the mobile device or the email or the calendar account, whenever a change in email account occurs.

The push technology of BlackBerry keeps the device instantly in “synch” without any effort by the user. 

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