Hyrja në SQL dhe Programimin me Python

Introduction to SQL

• SQL (Structured Query Language) is a specialized language for managing and manipulating data in relational database management systems (RDBMS).
• Core functions include querying, inserting, updating, and deleting data.
• SQL employs a declarative approach; users specify what data is needed, not how to get it.
• Common SQL clauses are SELECT, FROM, WHERE, ORDER BY, GROUP BY, and JOIN.

Python Programming

• Python is a high-level, general-purpose language known for its readability and flexibility.
• It supports various programming styles, including object-oriented programming.
• Python's extensive standard library offers pre-built modules for diverse tasks.
• Common applications include web development, scripting, data analysis, and machine learning.

Algorithms

• An algorithm is a set of well-defined steps to solve a specific computational problem.
• It must be clear, finite, and effective.
• Algorithms are critical for efficient problem-solving in computer science.
• Key algorithm design methods include greedy algorithms, dynamic programming, divide-and-conquer, and backtracking.
• Big O notation is used to analyze time and space complexity.

Arrays in Computer Science

• An array is a data structure storing a collection of same-data-type elements.
• Elements are stored consecutively in memory, enabling efficient random access.
• Arrays are fundamental in computer science for data storage and manipulation.
• Key characteristics of arrays include: fixed size (unless dynamic), accessing elements with indices (positions).
• Common array operations include element access, insertion/deletion (which can be complex/inefficient depending on the type).
• Use cases include matrix representations, stack/queue implementation, and sequential data storage.
• Time complexity (e.g., insertion/deletion at specific points might be slower than appending) is crucial for array operations.

SQL, Python, and Arrays in Combination

• Python can interact with SQL databases, retrieving and manipulating data.
• Libraries like sqlite3, psycopg2 (for PostgreSQL), and SQLAlchemy support SQL queries within Python programs.
• Python arrays can store data from SQL queries.
• This combination streamlines data handling and analysis, including visualizations.
• A typical workflow involves fetching data from a database table, storing it in Python arrays, and then using data analysis tools for processing and visualization.

Ky kuiz ofron një përmbledhje të SQL dhe Programimit me Python. Përdorimi dhe funksionalitetet e SQL për menaxhimin e të dhënave, së bashku me karakteristikat e gjuhës Python, eksplorohen në detaje. Merrni njohuri për algoritmet dhe aplikimet e tyre në këto gjuhë programimi.