Determining what database product best fits the requirements and limitations in a specific situation. This is advice that generally requires much more insight into requirements than can easily be gleaned on a Q&A forum such as StackExchange.

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3
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2answers
102 views

Data Modeling for different roles

This is my first post here, so I hope its clear enough. I want to make an application for people who sell, buy, rent and fix a certain product. I need to create a database that would keep the data of ...
0
votes
2answers
119 views

Daily snapshot fact table

I have a list of products per costumer. Costumers can delete or add products to their list. I want to know in each day what is the list of products (and count) by costumer. My first approach is to ...
1
vote
1answer
45 views

CRM Address table and it relation

Hi I want to ask about I have this DBD for my CRM I am trying to have the addresss in one table(customer and Employee Address) and both customerID and Employee ID are guid I have in address table FK ...
0
votes
1answer
55 views

Database design suggestions for a data scraping/warehouse application?

I'm looking into the database design for a data warehouse kind of project which involves a large number of inserts daily. The data archives will be further used to generate reports. I will have a ...
0
votes
1answer
19 views

Optional oneToOne relations and criteria field

Introduction: Visitors can fill reports on my website. Those report can either be filled by a legalPerson or a naturalPerson. Constraint: I don't like empty fields and I would like to normalize as ...
0
votes
1answer
51 views

Train Fare Database Normalisation

I have a database to normalize. The database has details of train ticket fares. The trains have different fares depending on the distance and I have to store these fares in the database It is not an ...
0
votes
1answer
204 views

Storing multidimensional array in MongoDB

I am attempting to convert a large MySQL database of product information (dimensions, specifications, etc) to MongoDB for flexibility and to move away from the restriction of a column based table. I ...
0
votes
1answer
65 views

What is the strategy of query evaluation in DBMS when Limit is used in query?

I have following tables in database post(post_id , user_id , post_text , parsed_text) ; Comment(comment_id , post_id , user_id , comment_text) ; friend(id , user_id , friend_id ) ; group (id , ...
0
votes
1answer
102 views

Automobile database logic

I am building a web based quoting system for a local automobile dealership. I think I have figured out the logic for the databases but I want to get a second opinion before I start just to make sure ...
0
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1answer
142 views

facebook group alike database scheme

Here are my requirements: one user can have many tasks one group can have many task one group can have many users only invited user by a user can be added into a group Does this db design appear ...
3
votes
0answers
138 views

What are reasonable options for an in-memory multi-core database?

I'm going to preface this with pointing out that I only need somewhat persistent data. The purpose of this database platform would be to support statistical analysis in R. I usually build my tables ...
2
votes
0answers
102 views

Digital asset management

I'm working in a company that currently develops Media Asset Management system and now we want to improve our system for document files. I have to search nearly thousand .doc and .pdf files and index ...
2
votes
0answers
286 views

SQL Server SSIS issue retrieve data when i enter into login of server side?

can any one try solve my problem here i am facing a problem Failed to retrieve data when i enter into login of server side here is the error message TITLE: Microsoft SQL Server Management Studio ...
2
votes
0answers
391 views

How to do automated archiving for a SQL Server database based on interpretation of database metadata?

I am looking for a solution giving me automated archiving of SQL Server databases based on a smart interpretation of table relationships that is able to archive records from related tables minimizing ...
1
vote
0answers
47 views

How to handle many columns / variable schema?

I apologize in advance in case this question has been asked already. I'm working on revamping a reporting application used within my company. The requirements are: Support addition of new fields ...
1
vote
0answers
44 views

Conceptual model vs Logical model vs Physical model

I'm doing a work about database, and now I need to show three different images, one image with the conceptual model, other with logical model and other with physical model of a database. I'm looking ...
1
vote
0answers
109 views

How to generate data for News Feed efficiently like facebook , googleplus , twitter e.t.c?

I have created table as post ( post_id int(15) auto_increment primary key , user_id int(11) , post_text varchar(2000) , post_type int(1), ...
1
vote
0answers
565 views

which role-permission database design?

I want to manage roles and permissions. Most of designs on web look like this tables: Users Roles UserRoles Permissions RolePermissions Here, what is permissions? I am thinking for such a design ...
1
vote
0answers
116 views

Real Time data collection - Help select Database

My Scenario: I want to collect data from various sensors[for now I have 600 sensors sending data, but this may have to scale up to 3000 more data sensors, all sensors send real time data] Now I have ...
0
votes
0answers
42 views

Database that supports fast prefix matching

I have a list of potentially millions of url's, e.g. twitter.com/user1, facebook.com/user2. For every incoming other url (10K/s) I want to find the longest prefix match among all the stored url's. ...
0
votes
0answers
16 views

Is there a database system specialized in versioning documents/records?

I'm trying to find the "best" database for my application, which involves: Large (or is it?) amount of data (~15GB of text data) Documents organized in hierarchies (up to ~5 levels of nesting) ...
0
votes
0answers
16 views

How to manage MySQL database with Oracle Fusion Middleware?

Is it possible to connect and manage a MySQL database with Oracle Fusion Middleware?
0
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0answers
18 views

employees Evaluation System database

I am new to database designing I want to design an Employees Evaluation System for a company. Based on Competencies Rating Each Manager will rate his/her employees at the end of each year for 6 ...
0
votes
0answers
52 views

Elasticsearch and product characteristics

I have a small question about elasticsearch. Let's say I have a database with products to sell, like an ecommerce. I know that elasticsearch can help me to find the best product with, for instance a ...
0
votes
0answers
75 views

Using MySQL As A Graph Database, Can It Be Done Efficiently?

So I am currently working on a startup idea with a friend and we've come a long way, it's somewhat functional and I've tried to not let database design decisions slow the progress of the site. As of ...
0
votes
0answers
48 views

Best practices for ranking records in flexible way

Suppose we have 10000 records of any product. User search on our website with his given criteria. so we output search results based on given criteria. Now Admin want to rank products in search. so ...
0
votes
0answers
46 views

how to design my database for faster reads for my situation

I have a situation where i have two categories. Lets say type A and type B. In my database I have some 50,000 type A entries and 100,000 type B entries as of now. For each entry mentioned above(type ...