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DDL commands are used to define and manage the structure of a database.
DDL stands for Data Definition Language.
DDL commands are used to create, modify, and delete database objects such as tables, indexes, and views.
Examples of DDL commands include CREATE, ALTER, and DROP.
DDL commands do not manipulate the data within the database, only the structure.
Truncate is a DDL statement that removes all rows from a table, while delete is a DML statement that removes specific rows.
Truncate is faster than delete as it doesn't generate any rollback information.
Truncate cannot be rolled back, while delete can be.
Truncate resets the identity of the table, delete does not.
Truncate does not fire triggers, delete does.
Truncate is non-logged operation, delete is logged.
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I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
The Aptitude Test session accesses mathematical and logical reasoning abilities
Vlookup is a function in Excel used to search for a value in a table and return a corresponding value from another column.
Vlookup stands for 'Vertical Lookup'
It is commonly used in Excel to search for a value in the leftmost column of a table and return a value in the same row from a specified column
Syntax: =VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])
Example: =VLOOKUP(A2, B2:D10, 3, FALSE) - searc...
My day in my previous organization involved analyzing large datasets, creating reports, and presenting findings to stakeholders.
Reviewing and cleaning large datasets to ensure accuracy
Creating visualizations and reports to communicate insights
Collaborating with team members to identify trends and patterns
Presenting findings to stakeholders in meetings or presentations
I possess strong technical skills in data analysis, including proficiency in programming languages, statistical analysis, and data visualization tools.
Proficient in programming languages such as Python, R, SQL
Skilled in statistical analysis and data modeling techniques
Experience with data visualization tools like Tableau, Power BI
Knowledge of machine learning algorithms and techniques
A Pivot Table is a data summarization tool used in spreadsheet programs to analyze, summarize, and present data in a tabular format.
Pivot tables allow users to reorganize and summarize selected columns and rows of data to obtain desired insights.
Users can easily group and filter data, perform calculations, and create visualizations using pivot tables.
Pivot tables are commonly used in Excel and other spreadsheet program...
To find the highest-paid employee in each department, we need to group employees by department and then select the employee with the highest salary in each group.
Group employees by department
Find the employee with the highest salary in each group
Retrieve the employee's name, salary, and department name
posted on 20 Oct 2024
Basic questions can be attempted easily
2 coding questions edge cases were hard to find
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
I applied via Walk-in and was interviewed in Mar 2024. There was 1 interview round.
I am a data analyst with 5 years of experience in analyzing and interpreting complex data sets to drive business decisions.
I have a strong background in statistical analysis and data visualization techniques.
Proficient in SQL, Python, and Tableau for data manipulation and reporting.
Experience in developing predictive models and conducting A/B testing to optimize marketing strategies.
I applied via Referral and was interviewed in Feb 2024. There were 2 interview rounds.
30 multiple choice questions
There were many puzzles ,some english ,comp sci related questions
English-arrange sentence in order ,ram,dns server,preposition,smallest unit bit,modem,repeater,lan ,search engine
DNS, WWW, HTTP, domain name, IP address, and HTML are all fundamental components of the internet.
DNS (Domain Name System) translates domain names into IP addresses.
WWW (World Wide Web) is a system of interlinked hypertext documents accessed via the internet.
HTTP (Hypertext Transfer Protocol) is the protocol used for transmitting data on the web.
A domain name is the human-readable address used to access websites (e.g. g...
I applied via Naukri.com and was interviewed in May 2023. There were 4 interview rounds.
Be well prepared with Excel especially
posted on 3 Jul 2024
I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.
Questions based on Amazon role requirements were asked, Behavioural questions were also asked. While format was choice based questions. Personality Assessment was carried out by giving many questions of similar type but having different options. Overall good.
Learn and study about Aptitude like Quantitative aptitude, verbal and reasoning. Practice more and attend more mock test
SQL is a programming language used for managing and manipulating relational databases.
SQL stands for Structured Query Language.
It is used to communicate with and manipulate databases.
SQL can be used to create, modify, and retrieve data from databases.
It is widely used in data analysis and data management roles.
Some popular relational database management systems that use SQL include MySQL, Oracle, and SQL Server.
based on 2 reviews
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