Are Databases and Functional Programming at odds?

Question

I\'ve been a web developer for some time now, and have recently started learning some functional programming. Like others, I\'ve had some significant trouble apply many of

Answer 1

Databases and Functional Programming can be fused.

for example:

Clojure is a functional programming language based on relational database theory.

               Clojure -> DBMS, Super Foxpro
                   STM -> Transaction，MVCC
Persistent Collections -> db, table, col
              hash-map -> indexed data
                 Watch -> trigger, log
                  Spec -> constraint
              Core API -> SQL, Built-in function
              function -> Stored Procedure
             Meta Data -> System Table

Note: In the latest spec2, spec is more like RMDB. see: spec-alpha2 wiki: Schema-and-select

I advocate: Building a relational data model on top of hash-map to achieve a combination of NoSQL and RMDB advantages. This is actually a reverse implementation of posgtresql.

Duck Typing: If it looks like a duck and quacks like a duck, it must be a duck.

If clojure's data model like a RMDB, clojure's facilities like a RMDB and clojure's data manipulation like a RMDB, clojure must be a RMDB.

Clojure is a functional programming language based on relational database theory

Everything is RMDB

Implement relational data model and programming based on hash-map (NoSQL)