MySQL Database Analytics with InfiniDB from Calpont – Part 2
In Part 1 of this article, I took you through some of the reasons why a column-oriented database based on MySQL can be compelling. We also examined the architecture of InfiniDB, which is an open source analytic, reporting, and read-intensive database, and how its modular design helps you scale both up and out. Now let's kick the tires of the database so you can see these things in action.
Hi guys, I would like to seek help on inserting data whenever the switch is on or off to my sensor mySQL database in phpMyAdmin from my control.php. I'm using Raspberry PI as my hardware and follow a few tutorials to create my own Web Control Interface, it works perfectly without insert method.... (1 Reply)
Dear All,
Can I make Mailx to read recipient address from a mysql database?
I already tried emailing with bash script:
SUBJECT="TEST"
export EMAIL_ADDRESS=`mysql -uroot -pabcde smsd -e "SELECT email FROM recipient"`
mysql -uroot -pabcde smsd -e "SELECT ID, SenderName, Body FROM inbox" |... (2 Replies)
Hi all,
I am trying to import a database in putty with the syntax:
mysql –u database_username –p database_name < filename.mysql
As you can see in the screenshot it asks me for the database password - which suggests that the syntax is correct - but then after I enter the password it gives... (2 Replies)
so when i issue a command like the below:
# mysql --pager=/usr/bin/less -u cactiman -p -e 'select * from data_input' cacti
Enter password: ... (2 Replies)
Hi All,
Thanks in Advance!!
How to backup a particular Databases..through Bash script!!
For example i have 6 databases;
Anish
linux
Software
Questions
Rhce
Google
these are the databases i have from that i want to take "Anish" and "questions" database backup regularly.... (4 Replies)
Alzabo::MySQL(3pm) User Contributed Perl Documentation Alzabo::MySQL(3pm)NAME
Alzabo::MySQL - Alzabo and MySQL
DESCRIPTION
This documentation is about what special support Alzabo has for MySQL, as well as what is lacking.
MySQL support is based on the 3.23.* release series, with some support for features that are starting to appear in the 4.0.* releases.
Earlier versions of MySQL will probably work with Alzabo, though Alzabo cannot magically make these releases support new features like
fulltext indexes.
Indexes
o Alzabo supports the ability to specify prefixes when adding an index. Prefixes are required when attempting to index any sort of text
or blob column.
o Alzabo supports the creation of fulltext indexes and their use in SELECT and WHERE clauses. This includes the ability to get back the
score given for a match as part of a select, using the "function" or "select" methods of either table or schema objects.
Reverse Engineering
o When reverse engineering a schema, Alzabo knows that MySQL has "default defaults" for certain column types. For example, if a DATE
column is specified as NOT NULL but is not assigned a default, MySQL gives this column a default of '0000-00-00'.
Because Alzabo knows about this, it will ignore these defaults when reverse engineering an RDBMS.
o Similarly, Alzabo knows that MySQL assigns default "lengths" to many column types. For example, if given INTEGER as a column type,
MySQL will convert this to INTEGER(11) or INTEGER(10), depending on the version of MySQL being used.
Again, Alzabo ignores these lengths when reverse engineering a schema.
o All of this may lead to apparent inconsistencies when using the with the "Alzabo::Create::Schema->sync_backend" or "Alzabo::Cre-
ate::Schema->sync_backend_sql" methods. If you are using this feature from the web based schema creator, you will see that even imme-
diately after running the "sync_backend()" method, Alzabo may still think there are differences between the two schemas. This is not a
problem, as running the SQL Alzabo generates will not actually change your database.
Transactions
Alzabo will try to use transactions whenever appropriate. Unfortunately, there is no way to determine whether or not a given table
supports transactions so Alzabo simply calls DBI's "begin_work()" method, whether or not this will actually do anything.
Constraints and Foreign Keys
o Column constraints are treated as column attributes.
o Foreign key constraints are not generated when generating SQL for a MySQL schema. This will probably change in the future.
Table Types
These can be specified as a table attribute.
perl v5.8.8 2007-12-23 Alzabo::MySQL(3pm)
