Solved

C++ database

Posted on 2000-04-20
3
378 Views
Last Modified: 2010-04-02
I need to be able to create a database in memory.  This database will be updated quite frequently(add, delete, update).  This database also needs to be queried.  The database must do all this as quickly as possible.  What is the best datastructure to use.  I have thought about using and MFC CMap.
0
Comment
Question by:joegood
  • 2
3 Comments
 

Expert Comment

by:Ik_Khan
ID: 2737255
I think that the Using of Double link list is a better option
0
 
LVL 3

Accepted Solution

by:
Try earned 300 total points
ID: 2737426
Go with STL!!  It has all sort of containers.  (Containers are components that stores data, each with their own set of algorithms and adaptors.)

Some containers are 'deque' (i.e. double-ended queue, meaning you can work at it in a bidirectional manner; from either end).  Some other containers are, list (as in linked list), map, multimap, set, multiset, stack and vector.  There are more, but like their generic name states, they are 'containers' because they hold a variety of data.

Algorithms are functions that work and manipulate the data stored in containers (e.g. sort, search, rearranging elements, assigning values to them, etc.).

Adaptors are interesting components!  They transform one thing into another (sort of like magic)!  They can take one container and provide a different interface to it, allowing one data structure to be turned into another, requiring the same capabilities, but whose interface require a different set of operations.  They connect onto an existing object on one side and make it appears differently on the other side.  They do not really change the object to which they are applied; they simply alter its appearance.  They are really interesting to work with!!

MFC is good, but compared to STL, it is slow (very slow) and clunky.  What's more, STL is part of the C++ language, while MFC is something additional you'd have to work with.  MFC is not part of C++, it is extra baggage you'd have to carry around.
0
 
LVL 3

Expert Comment

by:Try
ID: 2737428
I forgot to mention that STL will do ALL the things you stated you need.  It can add, modify, delete and can be queried.  In addition, it allows both random and sequential access, as well as forward or backward sequencing.  And it is FAST, ... VERY FAST!!!
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Often, when implementing a feature, you won't know how certain events should be handled at the point where they occur and you'd rather defer to the user of your function or class. For example, a XML parser will extract a tag from the source code, wh…
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question