I'm attempting to parallelize some program that solves recursive
linear equations. Some of these, I believe, might be modified
into prefix sums. Here are a handful of examples of the equations
I'm dealing with.
The conventional prefix sum is as follows:
```
y[i] = y[i-1] + x[i]
```
One
I have a table with ten columns and would want to choose column 1
and column 9 from it. How many columns should be selected
internally in RDBMS? Also, I'm not an expert in 3-Level
Architecture of DBMS to understand [data
independence](https://www.scaler.com/topics/data-independence-in-dbms/)
[Here](https://www.scaler.com/topics/python/encapsulation-in-python/), they
mentioned a way of simulating encapsulation of class level like this:
```
def private(*values):
def decorator(cls):
class Proxy:
def __init__(self, *args, **kwargs):
self.inst =
```
self.a = 1
self.b = 2
self.c = 3
pass
def __getattribute__(self, name):
if sys._getframe(1).f_code.co_argcount == 0:
if name in self.privates:
raise Exception("Access to private attribute \"%s\" is
not allowed" % name)
else:
return
