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@Skynet_Dreams

SQL, or Structured Query Language, is a domain-specific language used to manage and manipulate relational databases. Here's a brief A-Z overview by @TechAndEvents

A - Aggregate Functions: Functions like COUNT, SUM, AVG, MIN, and MAX used to perform operations on data in a database.

B - BETWEEN: A SQL operator used to filter results within a specific range.

C - CREATE TABLE: SQL statement for creating a new table in a database.

D - DELETE: SQL statement used to delete records from a table.

E - EXISTS: SQL operator used in a subquery to test if a specified condition exists.

F - FOREIGN KEY: A field in a database table that is a primary key in another table, establishing a link between the two tables.

G - GROUP BY: SQL clause used to group rows that have the same values in specified columns.

H - HAVING: SQL clause used in combination with GROUP BY to filter the results.

I - INNER JOIN: SQL clause used to combine rows from two or more tables based on a related column between them.

J - JOIN: Combines rows from two or more tables based on a related column.

K - KEY: A field or set of fields in a database table that uniquely identifies each record.

L - LIKE: SQL operator used in a WHERE clause to search for a specified pattern in a column.

M - MODIFY: SQL command used to modify an existing database table.

N - NULL: Represents missing or undefined data in a database.

O - ORDER BY: SQL clause used to sort the result set in ascending or descending order.

P - PRIMARY KEY: A field in a table that uniquely identifies each record in that table.

Q - QUERY: A request for data from a database using SQL.

R - ROLLBACK: SQL command used to undo transactions that have not been saved to the database.

S - SELECT: SQL statement used to query the database and retrieve data.

T - TRUNCATE: SQL command used to delete all records from a table without logging individual row deletions.

U - UPDATE: SQL statement used to modify the existing records in a table.

V - VIEW: A virtual table based on the result of a SELECT query.

W - WHERE: SQL clause used to filter the results of a query based on a specified condition.

X - (E)XISTS: Used in conjunction with SELECT to test the existence of rows returned by a subquery.

Z - ZERO: Represents the absence of a value in numeric fields or the initial state of boolean fields.

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Which Country you belong to?

Comment 👇🏻

🥇 Product of the Day

Lambda is a platform for investment portfolio analysis that combines in-depth financial analytics at the level of professional funds with an intuitive interface. It is important to note that Lambda does not provide direct investment advice; instead, the service assists you in conducting a thorough analysis, much like how experienced analysts operate.

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@Skynet_Dreams

1. Core Java Concepts
a. What is the difference between == and equals() method in Java?
b. Explain the concept of immutability. How is String class immutable?
c. How does garbage collection work in Java? What are different garbage collectors?
d. What are the different types of memory areas allocated by JVM?
e. How does hashCode() and equals() work?
f. What is the significance of final, finally, and finalize() in Java?
g. What is volatile keyword in Java?
h. What is the difference between HashMap and ConcurrentHashMap?

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Here are 10 popular programming languages based on versatile, widely-used, and in-demand languages:
1. Python – Ideal for beginners and professionals; used in web development, data analysis, AI, and more.

2. Java – A classic language for building enterprise applications, Android apps, and large-scale systems.

3. C – The foundation for many other languages; great for understanding low-level programming concepts.

4. C++ – Popular for game development, competitive programming, and performance-critical applications.

5. C# – Widely used for Windows applications, game development (Unity), and enterprise software.

6. Go (Golang) – A modern language designed for performance and scalability, popular in cloud services.

7. Rust – Known for its safety and performance, ideal for system-level programming.

8. Kotlin – The preferred language for Android development with modern features.

9. Swift – Used for developing iOS and macOS applications with simplicity and power.

10. PHP – A staple for web development, powering many websites and applications.

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Quick Placement Interview Tips

1. Research the Company: Know their values and recent news.
2. Practice Common Questions: Prepare for questions like "Tell me about yourself."
3. Showcase Skills: Use specific examples from projects or internships.
4. Prepare Questions: Ask insightful questions about the company.
5. Follow Up: Send a thank-you email after the interview.

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🌟 Top 10 Java Frameworks You Should Know 🌟

Here’s a quick guide to the most popular Java frameworks every developer should explore:

1️⃣ Spring: A powerful, versatile framework for building web applications and enterprise-level projects.

2️⃣ Hibernate: Simplifies database operations with its ORM (Object Relational Mapping) capabilities.

3️⃣ Struts: Ideal for creating scalable and maintainable enterprise-ready Java web applications.

4️⃣ Google Web Toolkit (GWT): Perfect for creating complex browser-based applications, especially with Java-to-JavaScript compilation.

5️⃣ JavaServer Faces (JSF): Simplifies web app development by connecting UI components to server-side data.

6️⃣ Grails: A Groovy-based framework designed for simplifying Java app development.

7️⃣ Vaadin: Focuses on modern web application development with an appealing UI and seamless integration.

8️⃣ Blade: A lightweight and high-performance framework for building fast REST APIs.

9️⃣ Dropwizard: Combines libraries to quickly create reliable, production-ready applications.

🔟 Play: A reactive web application framework that supports both Java and Scala.

💡 Explore these frameworks to stay ahead in your Java development journey! 🚀

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𝗛𝗼𝘄 𝘁𝗼 𝗰𝗼𝗱𝗲 𝘄𝗶𝘁𝗵 𝗚𝗶𝘁𝗛𝘂𝗯 𝗖𝗼𝗽𝗶𝗹𝗼𝘁?

A recent study by GitHub and Microsoft discovered that AI now authors 46% of new code. They also found that overall developer productivity surged by 55%, leading to more efficient coding processes. When we talk about AI-powered coding, we mainly talk about GitHub Copilot.

But 𝗵𝗼𝘄 𝗚𝗶𝘁𝗛𝘂𝗯 𝗖𝗼𝗽𝗶𝗹𝗼𝘁 𝘄𝗼𝗿𝗸𝘀?

The process goes in the following steps:

𝟭. 𝗦𝗲𝗰𝘂𝗿𝗲 𝗽𝗿𝗼𝗺𝗽𝘁 𝘁𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻: Your prompts are securely sent to Copilot, ensuring data privacy.

𝟮. 𝗖𝗼𝗻𝘁𝗲𝘅𝘁𝘂𝗮𝗹 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴: Copilot analyzes the code around your cursor, the file type, and other open files to offer relevant suggestions.

𝟯. 𝗖𝗼𝗻𝘁𝗲𝗻𝘁 𝗳𝗶𝗹𝘁𝗲𝗿𝗶𝗻𝗴: It filters out personal data and inappropriate content, focusing solely on generating helpful code.

𝟰. 𝗖𝗼𝗱𝗲 𝗴𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝗼𝗻: Based on the intent identified in your prompts, Copilot crafts code suggestions that align with your coding style and project standards.

𝟱. 𝗨𝘀𝗲𝗿 𝗶𝗻𝘁𝗲𝗿𝗮𝗰𝘁𝗶𝗼𝗻: Here, we can decide whether to use, tweak, or reject Copilot's suggestions.

𝟲. 𝗙𝗲𝗲𝗱𝗯𝗮𝗰𝗸 𝗹𝗼𝗼𝗽: Copilot learns from your interactions, improving its suggestions. Every time you tweak or reject its ideas, he knows from it. It employs techniques like zero-shot (asking without examples), one-shot (asking with an example), and few-shot learning (providing multiple examples) to adapt to our instructions, whether you provide examples or not.

𝟳. 𝗣𝗿𝗼𝗺𝗽𝘁 𝗵𝗶𝘀𝘁𝗼𝗿𝘆 𝗿𝗲𝘁𝗲𝗻𝘁𝗶𝗼𝗻: It remembers past prompts and interactions, making future suggestions more accurate.

COMMON TERMINOLOGIES IN PYTHON - PART 1

Have you ever gotten into a discussion with a programmer before? Did you find some of the Terminologies mentioned strange or you didn't fully understand them?

In this series, we would be looking at the common Terminologies in python.

It is important to know these Terminologies to be able to professionally/properly explain your codes to people and/or to be able to understand what people say in an instant when these codes are mentioned. Below are a few:

IDLE (Integrated Development and Learning Environment) - this is an environment that allows you to easily write Python code. IDLE can be used to execute a single statements and create, modify, and execute Python scripts.

Python Shell - This is the interactive environment that allows you to type in python code and execute them immediately

System Python - This is the version of python that comes with your operating system

Prompt - usually represented by the symbol ">>>" and it simply means that python is waiting for you to give it some instructions

REPL (Read-Evaluate-Print-Loop) - this refers to the sequence of events in your interactive window in form of a loop (python reads the code inputted>the code is evaluated>output is printed)

Argument - this is a value that is passed to a function when called eg print("Hello World")... "Hello World" is the argument that is being passed.

Function - this is a code that takes some input, known as arguments, processes that input and produces an output called a return value. E.g print("Hello World")... print is the function

Return Value - this is the value that a function returns to the calling script or function when it completes its task (in other words, Output). E.g.
>>> print("Hello World")
Hello World
Where Hello World is your return value.

Note: A return value can be any of these variable types: handle, integer, object, or string

Script - This is a file where you store your python code in a text file and execute all of the code with a single command

Script files - this is a file containing a group of python scripts

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‼️How Mass Media Makes Money‼️

Mass media earns revenue through various sources, with advertising being the primary one. Here are the key ways it generates income:

1. Advertising (Main Revenue Source)

•Companies pay for ads on TV, radio, print, and digital platforms.
• Ad costs depend on audience size and engagement.
• TV & Radio: Video/audio ads during breaks.
• Print Media: Paid space for visual ads.
• Digital Media: Banner ads, pop-ups, and video ads.

2. Subscription & Paywalls

• Users pay for access to premium content.
• Examples: Netflix, news websites, and magazines.

3. Sponsored Content & Product Placement

• Brands pay for promotional articles, videos, or product placements in media.
• Example: A soft drink brand featured in a movie scene.

4. Licensing & Syndication

• Selling rights to TV shows, articles, or reports to other platforms.
• Example: A news agency selling reports to newspapers.

5. Events & Merchandise

• Hosting live events, conferences, or concerts for revenue.
• Selling branded merchandise like clothing or accessories.


Mass media sustains itself through advertising, subscriptions, sponsorships, licensing, and merchandising. The industry is evolving with digital innovations, ensuring continuous revenue growth.

Posted by Anshuman Mangrulkar on Gita Community Feed.

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Top 40 Websites to Download Research Papers for Free

Accessing research papers can be challenging, but many platforms offer free academic content. Here are 40 websites where you can find research articles, theses, and preprints without paywalls:
1. Sci-Hub – sci-hub.se
2. ResearchGate – researchgate.net
3. Academia.edu – academia.edu
4. CORE – core.ac.uk
5. Semantic Scholar – semanticscholar.org
6. PubMed Central – ncbi.nlm.nih.gov/pmc
7. arXiv – arxiv.org
8. SSRN – ssrn.com
9. JSTOR (Free Access) – jstor.org
10. SpringerOpen – springeropen.com
11. DOAJ (Directory of Open Access Journals) – doaj.org
12. EThOS (British Library Theses Service) – ethos.bl.uk
13. Unpaywall – unpaywall.org
14. ScienceOpen – scienceopen.com
15. OpenAIRE – openaire.eu
16. OSF Preprints – osf.io/preprints
17. PaperPanda – paperpanda.app
18. Bielefeld Academic Search Engine (BASE) – base-search.net
19. ERIC (Education Resources Information Center) – eric.ed.gov
20. Citationsy Archives – citationsy.com/archives
21. DeepDyve – deepdyve.com
22. PLOS (Public Library of Science) – plos.org
23. Zenodo – zenodo.org
24. bioRxiv & medRxiv – biorxiv.org | medrxiv.org
25. PsyArXiv – psyarxiv.com
26. PhilPapers+ – philpapers.org
27. HAL Archives – hal.archives-ouvertes.fr
28. Redalyc – redalyc.org
29. SciELO (Scientific Electronic Library Online) – scielo.org
30. WorldWideScience – worldwidescience.org
31. Research4Life – research4life.org
32. Hindawi Publishing – hindawi.com
33. MDPI Open Access – mdpi.com
34. Cambridge Open Engage – cambridge.org/engage
35. Wiley Open Access – wileyopenaccess.com
36. Nature Communications – nature.com/ncomms
37. EBSCO Open Dissertations – opendissertations.com
38. OATD (Open Access Theses & Dissertations) – oatd.org
39. Digital Commons Network – network.bepress.com
40. Internet Archive (Scholar Section) – https://lnkd.in/gv7TBdQN