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Tutor profile: Basil B.

Basil B.
50 years in software development. 20 years teaching.

Questions

Subject: Python Programming

TutorMe
Question:

Why is Python so popular these days?

Basil B.
Answer:

Python has become popular for data analysis using machine learning and data visualization. It is also popular as a language for operational management, making it easier to automate recurrent tasks. It is also popular for its ease of programming and strength as a general purpose language.

Subject: Databases

TutorMe
Question:

What, besides the names, is the difference between a relational database and a "NoSQL" database. Give an example of a DBMS for each

Basil B.
Answer:

A Relational Database stores data in a tabular form (i.e. rows and columns) with no reference to any physical storage location. Relational Databased include the implementation of a query language Structured Query Language (SQL) to access the data. Examples of an RDBMS are SQL Server, Oracle Database, and MySQL. A NoSQL database, stores data in structures other than tables. This makes the querying of the data more complicated without a query language, but the data is better organized for speed. An example of a NoSQL database is MongoDB

Subject: C Programming

TutorMe
Question:

What is a pointer. What purpose does it suit?

Basil B.
Answer:

A Pointer is a reference to a construct in memory. Pointers are used when it is necessary to refer to something in memory in an indirect manner

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