Working in Agile mode became a golden standard throughout the past few decades for many leading companies in several different sectors of the market. In fact, several branches and methodologies of Agile exist for every working environment.
The Data Definition Language is the part of the SQL language that allows you to perform operations on the objects that make up the structure of a database (i.e. the container). These objects are TABLES, VIEWS or INDEX. (The present
A subquery is a SELECT statement that can be used against an unknown value (which is then known when the subquery is performed). In fact, subqueries are an indirect way to relate multiple tables, since the subquery can be built
The statistical functions are standard to SQL and allow the calculation of statistical results on the rows of a table. AVG (column) Average values SUM (column) Sum of values MIN (column) Minimum value MAX (column) Maximum value