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Databases (10)

 

In this episode of the Linux Academy Weekly Update, we are covering Databases, what they are, and what are the different types of them. This tutorial will assist beginners in understanding the basics of database management systems, all under 4 minutes. We use a real-world use case to explain a high-level overview of a variety of popular database types like flat files, relational, and non-relational databases. We also provide examples of database management systems and where to go to practice installing one yourself! For everything new this week with Linux Academy, please check out the weekly blog here: https://linuxacademy.com/blog/linux-a...

Posted On Tuesday, 16 January 2024 13:24 Written by

 

Q. What are the advantages of MySQL as compared with Oracle DB? Some of the main advantages of MySQL over Oracle DB are as follows:

I. Cost: MySQL is an Open Source and free RDBMS software. Oracle is usually a paid option for RDBMS.

II. Space: MySQL uses around 1 MB to run whereas Oracle may need as high as 128 MB to run the database server.

III. Flexibility: MySQL can be used to run a small website as well as very large scale systems. Oracle is generally used in medium to large scale systems.

IV. Management: In MySQL, database administration is much easier due to self-management features like- automatic space expansion, auto-restart and dynamic configuration changes. In Oracle dedicated DBA has to work on managing the Database.

V. Portable: MySQL is easily portable to different hardware and operating system. Migrating Oracle from one platform to another is a tougher task. Learn more MySQL interview questions,

join our popular MySQL Interview Questions Preparation Course with more than 50 questions for $10 only today!! https://www.udemy.com/mysql-interview...

Posted On Monday, 22 January 2024 13:24 Written by

In this sql tutorial video we'll show you a couple of key differences & similarities between the mysql server and its mariadb server counterpart. A MariaDB setup is one of the primary variations of MySQL server, but it doesn't come without its downsides and differences. This is what you will realize after watching this sql course. A MariaDB setup is fully compatible with MySQL server, it has additional storage engines unique to itself, and offers support for PHP, Python, Java, Perl, and other programming languages.

 

One of the main advantages of a MariaDB installation is its performance capabilities. Any MariaDB installation linux offers support for a high concurrent number of connections to itself without degrading performance, it is backwards compatible, has Galera Cluster technology built inside of itself, and also has an adaptive thread pool that creates new threads or terminates them if necessary.

 

However, if you're using a MariaDB installation, keep in mind that a MariaDB setup does have a smaller developer community around itself, some features working in MySQL server may not be supported in a MariaDB setup, and the functionality of some features available in its ecosystem may differ.

 

MySQL server installation has a larger user base, offers community support, is compatible with pretty much any programming language you can imagine, is very easy to use, and is frequently updated fixing bugs and releasing security patches. MySQL server installation has a wide range of tools that make work with the database management system easier, but it doesn't come without its downsides either.

 

Some MySQL features such as the MySQL Enterprise Firewall require you to purchase a commercial license and costs can add up quickly, and some argue that big data is a big achile's heel for MySQL server too. MySQL server can deal with bigger data sets, but only if it's been configured properly and if your data is adequately maintained. A MySQL server doesn't have an analytics-based engine either.

 

Keep in mind that it's very important to keep sql query optimization in mind and follow advice from a proper sql query tutorial to know how to write sql queries in the best way possible. Also keep in mind that the majority of sql interview questions and answers involve questions related to MySQL server and a MariaDB setup too! Some sql interview questions and general database interview questions can also be found below:

 

Q: Is mariadb installation difficult? A: No, mariadb installation linux or a mariadb windows setup isn't difficult at all! Just follow the guidance provided to you by MariaDB and you should be good to go. You can also follow this MariaDB tutorial if you're unsure whether you should choose MySQL server or a mariadb ubuntu installation. Q: What is database normalization? A: Database normalization is the process to eliminate redundant data and enhance data integrity in a database. Q: What are the types of database normalization? A: 1NF, 2NF, 3NF, and BCNF or 4NF.

 

Q: What are some of the main database slowness reasons? A: We've already made a video on this, but the main database slowness reasons are as follows: 1. Selecting too much data 2. Selecting unnecessary data 3. Scanning through many unnecessary rows To reduce slow sql queries, make sure to use sql indexes. Q: How dangerous is SQL injection? How to protect our web applications against it? A: SQL injection is one of the most dangerous attacks directed at databases and web applications. To protect against SQL injection don't forward user input to SQL queries.

Some of the content shared in this video is from Percona, some of it from personal expertise, some from elsewhere. Enjoy!

Music: Whisper - jiglr   / jiglrmusic  

Creative Commons — Attribution 3.0 Unported — CC BY 3.0 Free Download / Stream: https://bit.ly/3qICWvK

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Posted On Monday, 22 January 2024 13:24 Written by

 

🔥 MySQL DBA Certification Training (Use Code "𝐘𝐎𝐔𝐓𝐔𝐁𝐄𝟐𝟎"): https://www.edureka.co/search

This Edureka video on 'What is Normalization' will help you understand the basic concepts of Normalization in SQL and Databases and how it helps in organizing data and data redundancy in SQL with examples. Below are the topics covered in this Database Normalization tutorial: What is Normalization? 1st Normal Form (1NF) 2nd Normal Form (2NF) 3rd Normal Form (3NF) Boyce-Codd Normal Form (BCNF)\

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Posted On Tuesday, 16 January 2024 13:24 Written by

See this entire course on the Intro to Databases playlist. https://cbt.gg/2wh3UuW

More and more data is being collected and used. As a result, databases are more important than ever. CBT Nuggets trainer Garth Schulte covers databases and their benefits. What are Intro to IT courses? We all have to start somewhere. Intro to IT courses allow aspiring and seasoned IT pros alike to explore the different corners of the IT career field. These free, open courses are taught at a level anyone can understand by the same great CBT Nuggets trainers. Continue learning database technologies with CBT Nuggets and sign up for a FREE trial: https://training.cbt.gg/sbp

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Posted On Tuesday, 16 January 2024 13:24 Written by

One RDBMS databases is a pool of data.

It contains

  • tables (that have fields)
  • indeces
  • DB functions, triggers and procedures
  • DataBase files
  • Database Spaces
  • and more

can have functions like

  • import
  • export
  • tune
  • and more

can run

  • in cluster
  • in cloud
  • in one server with the app
  • in different server from the app
  • and more

can be

  • distributed
  • non distributed

can store

  • data
  • images
  • video
  • or links to video and images that are on disk
  • and more data types

can have

  • disaster clone
  • or not

can have

  • disk backup
  • tape backup
  • backup from export

 

 

 

 

Posted On Tuesday, 16 January 2024 13:24 Written by

IBM DB2 is a Relational database which stores the data in the form of rows and columns. Mainframe operating system allows users to build, access and maintain Relational databases using SQL(Structured Query Language). Types of Database System Hierarchical - IMS DB Network - IDMS Relational - DB2, Oracle etc. In this video, I have explained the important concepts in DB2. Please subscribe and like the video. Share our channel IIWOWIIS with your friends and colleagues.

Posted On Tuesday, 16 January 2024 13:24 Written by

A shorter introduction to what Informix is by Carlton Doe. Carlton Doe is an Informix Database Specialist at IBM.

Posted On Tuesday, 16 January 2024 13:24 Written by
 
Fireship 
 @Fireship

MongoDB is the world’s most popular document database with powerful capabilities like full-text search, geospatial queries, data aggregation, and more https://bit.ly/3rbFIpG I collaborated with the team behind MongoDB Atlas to prioritize this video, but I had full creative control of the content. They were kind enough to give us $200,000 in cloud credits to pass along!

 

🔗 Resources

MongoDB Atlas https://bit.ly/3rbFIpG

MongoDB on Github https://github.com/mongodb/mongo

Posted On Tuesday, 16 January 2024 13:24 Written by
 
 
This Database tutorial explains the concept of DBMS (Database Management System).To help beginners, it cites examples of real-life data base management systems. It explains types of DBMS for beginners. It explains how SQL works. This video course is a complete introduction to Database.
 
What is a DataBase Management System (DBMS)? What is a Database? Database is a systematic collection of data. Databases support storage and manipulation of data. Databases make data management easy. What is SQL? Structured Query language (SQL) pronounced as "S-Q-L" or sometimes as "See-Quel"is actually the standard language for dealing with Relational Databases. Like, share and subscribe our channel for more videos. Enjoy our free tutorial on our YouTube channel and our website.
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Posted On Tuesday, 16 January 2024 13:24 Written by

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