Abstract
This write-up describe the brief concept about black
box testing and data manipulation
operations .
Black box testing is attempts to find errors in the external behavior of
the code like incorrect or
missing functionality, interface errors, errors in data structures used
by interfaces, behavior or
performance errors. Data manipulation is the process of changing data to
make it organized or
meaningful form
Introduction
Black
box Testing
Black
box testing is the Software testing method which is used to test the software
without knowing the internal structure of code or program. -. For
example, in a black box test on a software design the tester only knows the
inputs and what the expected outcomes should be and not how the program arrives
at those outputs. The tester does not ever examine the programming code and
does not need any further knowledge of the program.
Advantages
·
The tester does not need knowledge of any
specific programming languages.
·
Test is performed from a user’s point-of-view and not of
the designer’s
·
Test cases can be designed as soon as the
specifications are complete.
Disadvantages
·
The reason for a failure is not found.
·
Testing every possible input stream is not possible
because it is time-consuming and this would eventually leave many program paths
untested.
·
Chances of having repetition of tests
that are already done by programmer.
Purpose of Each
Consistency Area
Data manipulation is the process of changing data in an effort
to make it easier to read or more organized. For example, a log of data could
be organized in alphabetical order, making
individual entries easier to locate. Data manipulation is often used on web server logs to
allow a website owner to view their most popular pages as well as their traffic sources.
A
data manipulation language (DML) is a family of syntax elements
similar to a computer programming
language
used for selecting, inserting, deleting and updating data in a database. Performing
read-only queries of data is sometimes also considered a component of DML.
Data Manipulation Operations
Select
Retrieve data from web application and mobile
application
Insert
Insert
data into a database, web application and mobile application
Update
Updates
existing data within a table or new record enter in a database , web
application and mobile application
Delete
Deletes records from desktop
application, web app and mobile app
Desktop App
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