Question

database statistics include the total numbers of records of database and mathematical sums and averages are called as​

Answer 1

Step-by-step explanation:

In database management, an aggregate function or aggregation function is a function where the values of multiple rows are grouped together to form a single summary value.

Common aggregate functions include:

Average (i.e., arithmetic mean)

Count

Maximum

Median

Minimum

Mode

Range

Sum

Answer 2

Step-by-step explanation:

In database management, an aggregate function or aggregation function is a function where the values of multiple rows are grouped together to form a single summary value.

Common aggregate functions include:

• Average (i.e., arithmetic mean)
• Count
• Maximum
• Median
• Minimum
• Mode
• Range
• Sum

Others include:

Nanmean (mean ignoring NaN values, also known as "nil" or "null")

Stddev

Formally, an aggregate function takes as input a set, a multiset (bag), or a list from some input domain I and outputs an element of an output domain O. The input and output domains may be the same, such as for SUM, or may be different, such as for COUNT.

Aggregate functions occur commonly in numerous programming languages, in spreadsheets, and in relational algebra.

The listagg function, as defined in the SQL:2016 standard aggregates data from multiple rows into a single concatenated string.