MariaDB – Regular Expression
Beyond the pattern matching available from LIKE clauses, MariaDB offers regular expression-based matching through the REGEXP operator. The operator performs pattern matching for a string expression based on a given…
MariaDB – Null Values
When working with NULL values, remember they are unknown values. They are not empty strings or zero, which are valid values. In table creation, column specifications allow for setting them…
MariaDB – Join
In previous discussions and examples, we examined retrieving from a single table, or retrieving multiple values from multiple sources. Most real-world data operations are much more complex, requiring aggregation, comparison,…
MariaDB – Order By Clause
The ORDER BY clause, as mentioned in previous discussions, sorts the results of a statement. It specifies the order of the data operated on and includes the option to sort in ascending…
MariaDB – Like Clause
In this topic, we will discuss the Like Clause in MariaDB.It provides a way to retrieve data when an operator uses an exact match. In situations requiring multiple results with…
Docker – Networking
Docker takes care of the networking aspects so that the containers can communicate with other containers and also with the Docker Host. If you do an ifconfig on the Docker Host, you…
Docker – Storage
Storage Drivers Docker has multiple storage drivers that allow one to work with the underlying storage devices. The following table shows the different storage drivers along with the technology used…
Docker – Container Linking
Docker Container Linking allows multiple containers to link with each other. It is a better option than exposing ports. Let’s go step by step and learn how it works. Step…
Docker – Instruction Commands
Docker has a host of instruction commands. These are commands that are put in the Docker File. Let’s look at the ones which are available. CMD Instruction To execute a…
Docker – Building a Web Server Docker File
In this topic we will discuss building a web server docker file. Now let’s see how we can build a web server image that can be used to build containers.…