MS SQL Server: Learn MS SQL Server from Scratch

Data is any sort of information which is stored in computer memory. This information can later be used for a website, an application or any other client to store for future purpose.
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DBMS is a collection of programs which enables its users to access database, manipulate data and help in representation of data. It also helps control access to the database by various users.
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SQL or SEQUEL is Structured Query Language, which is a computer language for storing, manipulating and retrieving data stored in relational database.
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SQL Server is designed for functionality. Whether you’re interested in using SQL Server for integration services, data analysis, or even machine learning applications, Oak Academy has a variety of courses to show you how it’s done.

First normal form (1NF) sets the very basic rules for an organized database.
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First normal form (1NF) sets the very basic rules for an organized database.
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In this part we will learn how to install and setup the requirement tools. We need two requirements to work with SQL Server.
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In this part we learn how to connect MS SQL Server Management Studio (SSMS) and we will learn about interface of the SSMS such as Object Explorer.
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In this part we will learn how to create a database, alter and delete database with graphically in SSMS and using SQL query

In this part we will learn how to create a table in a database alter and delete the table with graphically in SSMS and using SQL query

SQL data type is an attribute that specifies type of data of any object. Each column, variable and expression has related data type in SQL.
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A foreign key is a key used to link two tables together. This is sometimes called as a referencing key.
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The UNIQUE Constraint prevents two records from having identical values in a particular column. In the tableEmployees table, for example, you might want to prevent inserting multiple phone number.
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In this part we will learn how to insert data to a table in two different ways; graphically with SSMS and using SQL query

In this part we will learn how to update data in a table in two different ways; graphically with SSMS and using SQL query
SQL isn’t just for software engineers and system administrators. SQL also helps business analysts gain important insights into new marketplaces and make more informed strategic decisions. SQL instructors on Udemy have experience with all levels and applications of SQL programming.

AdventureWorks database is a sample database provided by Microsoft that comes with SQL Server. We will learn how to instal and setup AdventureWorks database on our SQL Server.
SQL is a special-purpose programming language used for the interaction and manipulation of data in relational databases. In DZone’s 2019 Guide to Databases, 98% of developer survey respondents said their organizations use relational databases regularly, which frequently rely on SQL to query the data. With Udemy courses on SQL, you can learn one of the most in-demand skills for professions ranging from product managers to marketers to software engineers.

In SQL, Select statements are used to retrieve data from tables in database. These kinds of queries begin with the word ‘SELECT’
SQL stands for Structured Query Language. It is a language used to manage data in a relational database. It allows you to query, manipulate, and define the data in a relational database. It has become a standard language, which means that the language the database uses will be based on SQL despite which relational database you use. This makes it a very versatile language and an important skill to have if you work with databases or data. The language closely resembles English, making it easy for English-speakers to learn and read at a glance, even for a beginner. Statements consist of clauses, identifiers, operators, and constants. Together, you can create statements such as “SELECT customer_name FROM Purchase_Table WHERE order_number = 253”. The resulting statement is structured so a computer can read, yet also easy for English-speakers with little programming

Retrieving the all data from a table may cause speed problems. OR Sometimes, we may need to get specific rows from a table. In this case we will need to use Where clause
Many career paths benefit from understanding SQL. Almost any industry that uses data can benefit from someone that specializes in relational databases. Some jobs specifically focus on working with a database, such as a Database Manager or Database Developer role. However, more and more jobs that do not solely concentrate on database maintenance require knowledge of SQL. Mostly all websites and applications use a database, so various developer positions require knowledge of SQL. Similarly, careers that involve working with data require skills in SQL. These careers can include Data Scientists, Database Developer, DB Admins, Business Analysts, Data Analysts, Big Data Experts, and Big Data Architects. Occupations that involve a database are growing. As the amount of data we collect increases, careers around the management, analysis.

There may be a situation when you have multiple duplicate records in a table. While fetching such records, it makes more sense to fetch only unique records instead of fetching duplicate records.

You should expect to learn the basics of the language in less than a month, or even as little as 2 weeks, if you are dedicated. But to be comfortable and perform non-trivial operations, it takes a few months to get your bearings in SQL. Because SQL is close to the English language, it is not very difficult to read, write, and understand if you're familiar with the English language. Even if you have no programming background, you should be able to learn SQL quickly. It does take a lot of practice to become a good SQL developer. Reading and writing SQL is just one component of being a SQL programmer. It is even more important to know how to structure data and manage relationships between tables. You need a deep understanding of relational databases to create a data structure that will work well with the type of data you have gathered

The LIKE operator is used in the Where clause of the Select, Update, and Delete statements to filter rows based on pattern matching.
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We can use case clause in any clause that accepts an expression such as Select, Where, Group By, and Having.
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