Entity Framework is an ORM (Object Relation Mapping) framework. Entity framework is made for ASP.NET applications by Microsoft.

It supports LINQ queries, change tracking, updates, and schema migrations. Entity framework works with many databases, including SQL Database (on-premises and Azure), SQLite, MySQL, MSSQL, PostgreSQL, and Azure Cosmos DB. …

1) INTRODUCTION :- Data type defines the type of data is being hold by object. Mostly all the data types are common in all the languages. Some common data types are integer, string, Boolean, null. There are some additional data types in JavaScript that are as object, undefined.

You will…

The count is used in SQL to return number of rows from Result Set.

Syntax of using count() :

Count () can be used in SELECT statement as well as in GROUP BY clause.

Syntax with SELECT STATEMENT :-

SELECT COUNT(EXPRESSION) FROM TABLE_NAME;

Syntax with GROUP BY CLAUSE :-

SELECT COLUMN_NAME,COUNT(EXPRESSION) FROM TABLE_NAME GROUP BY COLUMN_NAME HAVING COUNT(EXPRESSION) RELATIONAL_OPERATOR VALUE;

We can put three type expressions in Count() and all…

Variable is used to store the value in the physical memory.
Whenever we create the variable some physical memory gets allocated to it.

Syntax of declaring the variable:

There are two ways of declaring the variable:

  • Declaring and defining the variable at the same time
  • Only declaring and defining in another line

Declaring and defining the variable at the same time:

We can…

Vishal Pathak

love ❤ coding, solving some industry problems technologies: JavaScript, C#, Angular, PLSQL, Docker Want to learn: Python, Go language, AI, ML and Cloud

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