Exploring the Most Infamous
Software Glitches in History provides insights into some of the most impactful
and notorious software failures that have occurred throughout history. Here are
several examples:
1. Y2K Bug (Year 2000 Problem):
- As the year 2000
approached, many computer systems stored dates using only the last two digits
of the year (e.g., "99" for 1999). Concerns arose that when the year
changed to 2000, computers...
Sunday, February 4, 2024
Debugging 101: Strategies for Squashing Software Bugs
Description:
Debugging is the process of
identifying and fixing errors, or "bugs," in software code. It's an
essential skill for developers and programmers to ensure their programs
function correctly and efficiently. "Debugging 101" suggests an introductory
level of understanding, making it suitable for beginners or those looking to
improve their debugging skills.
Strategies for Squashing
Software Bugs:
1. Identifying the Bug:
...
Top 10 Common Coding Errors and How to Fix Them
1. Null Pointer Exception: - **Description:** Null pointer exceptions occur when you try to access a member or method of an object that's null. It's a common mistake in Java and other languages that support pointers. - **Example:** Suppose you have an object reference `obj` that is not initialized properly, and you try to call a method like `obj.someMethod()`. This will result in a null pointer exception. - **Fix:**...
Saturday, February 3, 2024
Solved: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
Follow the given steps to solve the issue. The commands here are for CentOS 8. The solution is same for other OS as well so modify the commands accordingly.Step 1: After the installation of MYSQL is finished, enable and start mysqld as given below:sudo systemctl start mysqldsudo systemctl enable mysqldOnce, done also check the status of the mysqld to verify whether it is running...
Thursday, February 1, 2024
Steps to install oci8 on centos 8
The following steps is valid for Oracle 11g, you can modify as per your oracle version in a similar fashion.1. Install the Oracle Instant Client:
- Download the Oracle Instant Client RPM
packages for your architecture from the Oracle website
(https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html).
You'll need oracle-instantclient-basic
, ...
Steps to install HTTPD, PHP, MYSQL and PHPMYADMIN in CentOS 8
Steps to install httpd in CentOS 8sudo yum install dnfsudo dnf updatesudo dnf install httpdsudo systemctl start httpdsudo systemctl enablr httpdsudo systemctl enable httpdsudo firewall-cmd --add-service=http --permanentsudo firewall-cmd --reloadsudo systemctl status httpdsudo dnf update
Steps to install PHP in CentOS 8sudo dnf updatesudo dnf install epel-releasesudo...
Tuesday, January 30, 2024
Defining and differentiating Super key and Candidate Key based on two properties
Candidate keys and super keys are concepts in relational database theory that relate to the uniqueness and irreducibility of attributes within a table's schema.1. **Super Key**: - A super key is a set of one or more attributes (columns) that uniquely identifies each tuple (row) within a table. - It may contain more attributes than necessary to uniquely...
Monday, January 29, 2024
Interesting and Useful features of Gmail : Use single Gmail account as Multiple email address
Gmail addresses offer several interesting features and nuances beyond the standard email format. Here are a few more:1. **Dot Ignorance**: Gmail addresses ignore dots in the username. For example, "john.doe@gmail.com" is the same as "johndoe@gmail.com" or "j.o.h.n.d.o.e@gmail.com". They all route to the same inbox.2. **Case Insensitivity**: Gmail addresses are not case-sensitive....
Wednesday, January 24, 2024
Wednesday, January 10, 2024
Thursday, November 2, 2023
Wednesday, November 1, 2023
Wednesday, September 27, 2023
Difference between JAVA and JAVASCRIPT
Java and JavaScript are two distinct programming languages that share a similar name but are used for different purposes and have significant differences. Here's a breakdown of the key differences between Java and JavaScript:1. **Origin and History**: - **Java**: Java was created by James Gosling at Sun Microsystems in the mid-1990s. It is a statically-typed,...
Tuesday, September 26, 2023
Immutable backup and how it is achieved ?
An immutable backup refers to a type of data backup that cannot be modified, altered, or deleted once it has been created. The term "immutable" implies that the data is protected from any changes, intentional or accidental, for a specified period of time or until certain conditions are met. This concept is commonly used in data protection and disaster recovery strategies to...
Saturday, September 23, 2023
Friday, September 8, 2023
Different Bands in Mobile Telecommunication?
Telecom mobile communication systems use various frequency bands to provide wireless services. Different countries and regions allocate specific frequency bands for mobile communication services, and the exact frequency ranges can vary. Here are some of the commonly used frequency bands in mobile communication:1. **GSM (Global System for Mobile Communications):** -...
