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SQL SORT BY Statement
In relational databases, the SQL ORDER BY statement is a powerful tool for sorting data in a table. The statement is used to arrange queried data into rows in a specific order, based upon one or more...
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Working with NULL Values in SQL
In SQL and relational databases, NULL values are an important part of managing data and information stored in SQL tables. A NULL value is used as a placeholder for missing values or values that are...
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Working with SQL AND, OR, and NOT Operators
In a previous tutorial, we learned how to work with the WHERE clause in SQL, which database developers can use when they wish to retrieve a group of records that meet a certain criteria or condition....
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How to Use Databases With Python
Python allows developers to interact with various relational databases (such as Oracle, SQLite, and MySQL) and relational database systems (RDBMS) through several different libraries, which must...
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SQL Data Types
In SQL, data types help to define the type of value that can be stored in a database cell, or, more specifically, in a column. There are many kinds of data types in SQL and in this database...
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How to Use SQL WHERE Clause
When querying a relational database, database programmers and administrators will often need to filter the records returned or extract specific records that meet a given criteria. In this database...
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What is PostgreSQL?
PostgreSQL is one of the world’s most widely used database systems in the world, offering support for not only structured query language (SQL), but JSON as well, making it a great choice for...
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How to Prevent SQL Injections
An SQL injection is an attack on a database server where a malicious actor enters – or injects – some nefarious input in a form, other than the expected input. The attack can be used to gain access to...
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What is a Relational Database Management System
If you are new to database administration or database development, you have no doubt heard the phrase “relational database management system” being tossed around. As database programmers or those that...
View ArticleSQL Best Practices
Structured Query Language (SQL) is a simple, yet powerful database programming and administration language used to manipulate data stored in a relational database or relational database management...
View ArticleUnderstanding Views in SQL
Learn about the concept of views in SQL, and how they work. Read on to see clear examples of how to implement views.
View ArticleWorking with SQL Cursors
In SQL cursors serve as a pointer that enables application programming language to deal with query results one row at a time. Read on to explores the concept behind and learn how to declare cursors,...
View ArticleConnecting to a MySQL Database in .NET
Learn how to connect to a MySQL database from a .NET application.
View ArticleAdding Data to a Cloud Firestore Database
Learn how to add data to a NoSQL Cloud-based database (Firebase Firestore) from a simple web application.
View ArticleIntroduction to Firebase
If you are doing a mobile or web-based app that need scalable access to a scalable, multi-user Cloud-based database that includes analytics and other features, then Firebase is worth taking a look....
View ArticleUnderstanding Query Execution in Relational Database System Architecture
What happens behind the scene in a modern relational database management system when a user submits a query until the result is obtained from the database? Read on to learn more!
View ArticleA Quick Look at SQL Server Numeric Functions
If you are wanting to manipulate numeric data with mathematically, then you will wan tot read on to get an overview of the core SQL numeric functions
View ArticleQuery Performance Optimization in MySQL
Discover a few optimization points to ponder upon while designing a better query in MySQL.
View ArticleUnderstanding Schema Optimization in MySQL
Optimizing Schemas for your data can involve trade-offs. Delve into the intricacies of schema optimization and how to achieve them in MySQL.
View ArticleUsing Five Types of JOIN in MySQL
Learn how to use the different types of joins available in a MySQL database.
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