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I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
There are three main types of research: exploratory, descriptive, and explanatory.
Exploratory research: used to gain a general understanding of a topic or problem
Descriptive research: used to describe characteristics of a population or phenomenon
Explanatory research: used to test hypotheses and establish cause-and-effect relationships
Qualitative research is exploratory and subjective while quantitative research is numerical and objective.
Qualitative research is used to gain insights and understanding of underlying reasons, opinions, and motivations.
Quantitative research is used to quantify data and generalize results from a larger sample population.
Qualitative research methods include interviews, focus groups, and observation.
Quantitative research ...
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I applied via Naukri.com and was interviewed in Oct 2020. There was 1 interview round.
I applied via Campus Placement and was interviewed before Feb 2020. There were 5 interview rounds.
I applied via Recruitment Consulltant and was interviewed before Nov 2021. There were 4 interview rounds.
About Market research. Types of research.
I applied via LinkedIn and was interviewed in Apr 2024. There was 1 interview round.
Primary research involves collecting data directly from original sources.
Primary research is conducted by the researcher themselves, rather than relying on existing data or information.
It involves methods such as surveys, interviews, experiments, and observations to gather new and specific data.
Examples of primary research include conducting focus groups to gather opinions on a new product, or carrying out experiments ...
Types of primary research include surveys, interviews, observations, and experiments.
Surveys involve collecting data from a large group of people through questionnaires or interviews.
Interviews involve one-on-one conversations with individuals to gather in-depth information.
Observations involve watching and recording behaviors or events in a natural setting.
Experiments involve manipulating variables to test hypotheses
I applied via Campus Placement
I applied via Company Website and was interviewed in Nov 2023. There were 2 interview rounds.
Calculation and Logics
Alter command on table affects views created on the table.
Views are virtual tables created from one or more tables.
Alter command on a table can change the structure of the table, which can affect the views created on it.
If the columns used in the view are altered or dropped, the view will become invalid.
If the data in the table is changed, the data in the view will also change accordingly.
Data transformations in SSIS include Lookup which retrieves data from a source based on a matching condition.
Lookup is used to retrieve data from a source based on a matching condition
It can be used to perform joins between two data sources
Lookup can be used to update or insert data into a destination based on a match
Other data transformations in SSIS include sorting, aggregating, and merging data
Drop deletes the table structure and data, truncate deletes only data, and delete deletes specific rows.
Drop: removes the table and all its data permanently
Truncate: removes all data from the table but keeps the structure
Delete: removes specific rows from the table based on a condition
Drop and truncate cannot be rolled back, but delete can be
Drop and truncate reset the identity of the table, but delete does not
Truncate resets identity value, delete does not.
Truncate resets the identity value to the original seed value
Delete does not change the identity value
Example: Truncate table resets identity value to 1
Example: Delete from table does not change identity value
Joins are used to combine data from two or more tables based on a related column. Types include inner, outer, left, right, and cross join.
Inner join returns only the matching rows from both tables.
Outer join returns all rows from both tables, with null values for non-matching rows.
Left join returns all rows from the left table and matching rows from the right table.
Right join returns all rows from the right table and m...
Query to join employees who are all managers using id in the table.
Use self join to join the table on manager id and employee id
Filter the result to only include employees who are also managers
Example: SELECT e1.name, e2.name FROM employees e1 JOIN employees e2 ON e1.id = e2.manager_id WHERE e2.manager_id IS NOT NULL
Ensure that the table has a manager_id column
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Nielsen
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Telecom Network Solutions
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