Our today’s topic of discussion is SQL DEFAULT Constraints in SQL. SQL DEFAULT Constraints are used to provide ‘ Default ‘ values to the column. The Default Values are added if no value is specified to the column. SQL Auto increment feature has been already discuused and This property are mostly used by the ‘Primary …
In this tutorial you will be familiarized with basics of structure available in C programming language along with the syntax of declaring & accessing them and example program . Structure : Structures in C are defined as user defined data type available in C language which allows to combine data of different datatypes. As we …
In this tutorial, union available in C programming language that is explained in easier manner along with the syntax of defining a variable , accessing data members and example illustrating defining a variable & accessing of all the data members. UNION : Union is also like structure, i.e. it is defined as collection of different …
SQL Index are special object built on top of the table. Indexes are created on columns of a table. One table can have more than one indexes.Data from databases could be retrieved fast using SQL indexes.Indexes are not visible and they are only used to speed up queries. Note: A table with a Index takes …
In this article we will discuss the working of SQL Dates. The most important part is that the format of data inserted should always match the data column in the table/database: Note: if column contains ‘ Date ‘ field , then it will work normal. However a combination of (Date+ time) field causes complexity . …