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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1answer
69 views

What is the ideal backend for global apps? [closed]

Should our tiny team use Parse or firebase or other backend solution for a global instagram-like app we are developing ? Speed of development is very key.
2
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1answer
184 views

Which databases can meet these replication requirements?

I am doing research on database architectures for a large project, and I am looking for which software can meet my requirements. To try to explain the requirements simply: You have a master ...
2
votes
1answer
225 views

DBA Tasks ( SQL Server 2008 ) - Recommendation - Maintenance plan

I'm a JR DBA on a big company. I was hired 6 months ago, and I'm learning things really fast (I'm the only DBA here). The old DBA left servers and SQL Server instances for me, to take care of it. It'...
2
votes
1answer
3k views

Mirror / replicate only 1 table of a database

I need a good way to replicate a single table in SQL Server 2012 between different servers and different databases. I tried replica which works just fine, but there might be a much better / easier way ...
0
votes
2answers
474 views

Best database for a real time application [closed]

I am a student doing my Final Year Project where I need to build an android application for on the road navigation. The problem is the application has a feature that alerts the user of nearby incoming ...
6
votes
4answers
877 views

shrink after archiving, is this that bad too?

I have a database which grow to 20 GB, after archiving some data, the real size of tables is just 5GB. Backup script does save a copy of the backup to a different location. Moving 20GB or 5Gb does ...
0
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0answers
45 views

Data containing list of all the domain names. MongoDB or MySQL?

Data containing list of all the domain names (currently present in the Internet world), along with few attributes (5-6 or maybe 10, each attribute being a column) will be considered as Big Data? ...
0
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0answers
119 views

What kind of data cannot be stored economically in a database / data-warehouse?

Someone mentioned this in a presentation but didn't provide any examples. This stuck with me and I am trying to figure out what kind of data couldn't be stored economically in datbases ever since. It ...
0
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3answers
49 views

Which databases support encryption [closed]

I'm searching for a database that can run on Windows and can be accessed with C#. The Database also requires that the data can be encrypted (ideally without backdoors). Can MariaDB serve here?
-1
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1answer
183 views

Database migration for Large Data Set from MySQL to NoSQL

I have an existing APP that has N types of products that is normalized with MySQL. Each types of products have over 500K skus, and one of them are in the in 2M currently. We are currently tracking on ...
0
votes
1answer
188 views

What is the best design for storing courses subscription data?

Building an app that will manage lessons, students, courses. Each lesson belongs to a certain course. A student can subscribe to a single lesson or to a whole course. So it seems straightforward that ...
1
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2answers
781 views

Database design for attendance feature

My app has a requirement wherin we need to capture attendance details of a class. A class typically has 50-60 students and there will be records with attendance/absense status of each student for a ...
0
votes
1answer
72 views

What's the best database if i want save data temporally? [closed]

I want to create a datalog system so I need to store some int data temporally. What would be the best database (Relational, NO-SQL or some specific) for that purpose? And what would be the best way to ...
0
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0answers
46 views

Platform to manage and analyze peer evaluations?

Our academic department (at a US university) collects mandatory paper-based peer evaluations at undergraduate level for a number of classes each semester. So in a typical class of 60 students, folks ...
1
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0answers
133 views

TPC-DS data generation

Is there a way to generate TPC-DS/TPC-H data using Normal Distribution, i.e., is there a way to specify the distribution type while generating TPC-DS/TPC-H? EDIT : I believe there is an option for ...
1
vote
2answers
100 views

Separate login for user / administrators using mongodb

I have 2 separate groups of users on my website. One is user and the other one is admin. Currently I put them in 2 different collections user and admin and login respectively. My questions is: ...
0
votes
1answer
35 views

tables relationships in database

Just a basic question here but it's been bothering me for a while. Do all tables have to be related to another? I'm trying to design a database so far I have 15 tables, 13 of them have relationships ...
0
votes
1answer
63 views

How can I quantify the business value of normalization?

My company is developing an internal application with a SQL server database which was started earlier by another developer. Now I am Looking at the model,the developer has stopped at 1NF. I proposed ...
0
votes
2answers
377 views

Creating tables with inheritance

I'm fairly new to SQL. I just wanted to create a database from scratch to learn. So I have a table called Addresses and I want to create two tables dependent on it that are Country and State, Im not ...
2
votes
1answer
3k views

Can I copy a collection in mongoDB from one database to another by copying the db files directly?

I tried using cloneCollection http://docs.mongodb.org/manual/reference/command/cloneCollection/ , but clonecollection takes a lot of time in case of big collection because it starts indexing the data. ...
0
votes
3answers
147 views

Database Design for Paper Submission System

I am learner of Database design, I want to design a database for a journal paper submission system in which one paper can be submitted by one or more author. I have initially two tables Author and ...
1
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1answer
57 views

Does InnoDB Log Files take RAM space or Disk Space

When I set InnoDB Log File size to 512M, does it take the space (512M * 2) from RAM or the SSD Disk space? When I explored, I can see that the log files are located inside /var/lib/mysql folder. So ...
3
votes
1answer
12k views

What are the advantages and disadvantages of Firebase for a database? [closed]

I am currently developing a site to track credits gained from exams, and how these stack up against the user's goal credits. I am looking for a database system that will store all the possible exams ...
0
votes
3answers
201 views

Confused about Primary Keys, and Foreign Keys

Im brand new to database design and, I'm slightly confused about Primary Keys, and Foreign Keys and my database design. Context: I'm working on a database of museums and Categories will be one way ...
0
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1answer
141 views

Copy database from one mysql sever to another mysql server

Following are the details of the database and server: Server1: Host Name: abc Port Num: 01 database: test Server2: Host Name: xyz Port Num 02 database: spareparts userid: spts password: abcdefgh@123 ...
0
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3answers
721 views

Converting huge ASCII file to flat and convert

I am not a db administrator but I thought to ask this question here. I have several very large ASCII files (3-5GB each) that I need to extract the data and then sort it. The instructions say to "...
1
vote
1answer
417 views

Saas MySQL Multiple Databases or One Database [closed]

I am using MYSQL so Database is the Schema, sorry if not using right terminology. I currently have a Saas product which has multiple databases one for each client with a main databases which we ...
1
vote
1answer
57 views

Database setup for datalogging

We're currently starting to build a version 2 of our system and one of the things we've noticed with version 1 is that we'll have quite a bit of data so we started to rethink our approach to how to ...
0
votes
1answer
18 views

Debate on which id to use as reference when quering a one to many table

I have a database that has a One to Many relationship. A few changes are in order and now when I query the output I need to provide just one ID field. The output contains all iterations of the one to ...
1
vote
1answer
3k views

Small startup: Cassandra + Hadoop or ElasticSearch

To give some context, I am from a small start up (4 team members) and we work in the education space. We've developed an e-learning platform that several schools are already using. We currently have ...
1
vote
2answers
255 views

Relational Model vs. Database Products [closed]

The formal Relational Model (logical level) for databases is not exactly the same thing as you get with MySQL, Oracle or other major products / implementations of ‘relational’ database management ...
1
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2answers
54 views

DB for storing simple time-stamped values

I don't have that much experience in databases but I need to accomplish this as best as I can. It is rather specific. Database will contain only data structured like this: dataID-timestamp-value ...
1
vote
2answers
253 views

How to architect an analytical BI platform? [closed]

I am working on a new BI project for a medium sized corporation. Right now there is no Analytical infrastructure in place and the reporting is done manually in Excel. There are a few different data ...
0
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0answers
75 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
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2answers
67 views

What database should I use? [closed]

I am writing a log analysis program in bash. As part of it, I am compiling a list of known errors, so that I can search and reference those errors as part of the known list. I originally was going to ...
1
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0answers
465 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 (...
0
votes
1answer
71 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) ...
1
vote
2answers
213 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
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1answer
62 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 ...
1
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0answers
293 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 ...
4
votes
4answers
267 views

Are we a good fit for SQL Server Enterprise and table partitioning?

We currently have a production database that contains millions of records (14 million in the largest table). One function of the database is to provide time sheet information so a single table could ...
0
votes
1answer
228 views

SQL or NoSQL for structured clinical data [closed]

I'm designing a database for a primary health center, the idea We basically have a Patient with many Encounters, also the Encounters have to be entered from different Users (Health Professionals). ...
1
vote
1answer
588 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 ...
1
vote
1answer
54 views

Understanding how relationship sides works

So, I have this relations on my tables (see image) and I need to understand some things. I'll enumerate what I understand and what I need from yours is to say if I'm right or not and in case I'm not ...
1
vote
4answers
441 views

Database/Storage engine suggestion for a project involving heavy inserts?

I am looking into a project which involves large number of inserts daily.I will have a list of user's (for example a user set of 500k ) , for which I need to monitor daily certain activities ...
0
votes
1answer
131 views

Creating and designing Air Trafic Control System [closed]

I'm having a class about Database management system, and the prof. gave us a project regarding Air traffic controller system, exact question is "Design and create a system which can manage ...
1
vote
1answer
570 views

Way to run SQLCMD without storing password in text format

Is there a way to run sqlcmd from a batch file where I don't want to store the password in plain text format. I have done some research and found the system variables method(store password in system ...
1
vote
2answers
227 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
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1answer
78 views

What table should I host data linking two objects from separate tables?

I've tried searching around, but I'm not too sure how to correctly formulate this question, and found nothing. Could be a duplicate. What is the best way (most efficient way) to host data that will ...
2
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0answers
53 views

Database for temporary data with 2^20 variables [closed]

I'm building a site to display graphs based on a data set with 1024^2 different variables (columns, traditionally) per point (record). That is to say, the points are in 1048576-space. The data is ...