Displaying 3 results from an estimated 3 matches for "27s_12_rules".
2024 Dec 11
2
SQL and R
...ly to manipulate relational databases. It was developed in the early 1970s (equivalent to the historical bronze age) when the concept of a relational database (see https://en.wikipedia.org/wiki/Relational_database) and Codd's 12-rules were being developed (see https://en.wikipedia.org/wiki/Codd%27s_12_rules)
At the time, the concept of a relation database and a programming language dedicated to manipulating them was revolutionary. The concept was clearly needed, important, and well used; a commercial version of SQL, Oracle, made Larry Ellison more than a quarter billionaire.
S, one of the progenitor...
2024 Dec 11
1
SQL and R
...ational
> databases. It was developed in the early 1970s (equivalent to the
> historical bronze age) when the concept of a relational database (see
> https://en.wikipedia.org/wiki/Relational_database) and Codd's 12-rules
> were being developed (see https://en.wikipedia.org/wiki/Codd%27s_12_rules)
>
> At the time, the concept of a relation database and a programming language
> dedicated to manipulating them was revolutionary. The concept was clearly
> needed, important, and well used; a commercial version of SQL, Oracle, made
> Larry Ellison more than a quarter billionaire.
&...
2024 Dec 11
7
SQL and R
dear Members,
I have recently started studying SQL and MySQL. My question is, what exactly is SQL used for? That is, whatever can be done by SQL, like subsetting and filtering of data sets, can also be done by R. What's, then, the advantage of SQL? It is OK if you tag this question as offtopic, but I could'nt find any info on the web. Can you please refer me to