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Generally, in Excel, we can calculate the average of a row or column directly by using the average formula. When we calculate the average in Excel, as you can see, the blank cells in the sheet are ignored automatically. But have you ever tried to find the average of cells excluding zeroes in Excel? This tutorial will help you understand how we can find the average for a range of data by ignoring zeroes in Excel. We can complete this process by using the formulas supported by Excel in an amazingly effortless way. Averaging a Range of Data in Excel ... Read More
A drop-down list is used to choose a single item from the list of data. When we add an item to the source data, we can see that the list will not be updated. A drop-down list is used to select an item from many items, but if we try to add an item to the list, we need to create a new list again. However, there is a way in Excel to auto-update drop-down lists when new data is added to the sheet. This tutorial will help you understand how we can auto-update drop-down lists in Excel. Auto-Update a ... Read More
When we have an existing chart and you need to add new data or update the existing data, this can be done by manually updating the chart, but it can be a time-consuming process. In this tutorial, I will explain the method that saves you time. This tutorial will help you understand how we can automatically update a chart after entering new data in Excel. This can be done in two ways: first, by using the tables, and second, by using the dynamic formula. Auto-Update a Chart after Entering New Data Using Tables Here we will convert our data into ... Read More
When we are performing a sum for a single column or row in Excel, we can directly use the formula to do it, but if we are doing the same process for multiple rows or columns at once, we cannot do it using the formulas. We can complete the process by using the auto function in Excel. This tutorial will help you understand how we can autosum multiple rows, columns, or worksheets in Excel. AutoSum Multiple Rows in Excel Here we will use the autosum function under formulas. Let us see a straightforward process to see how we can autosum ... Read More
Introduction to the CAST Function in Cassandra Cassandra is a highly scalable and distributed NoSQL database that is well-suited for storing and managing large amounts of data. One of the key features of Cassandra is its powerful query language, CQL (Cassandra Query Language), which allows you to easily retrieve and manipulate data stored in Cassandra. One useful function in CQL is the CAST function, which allows you to change the data type of a column or expression. This function is particularly useful when you need to perform calculations or comparisons on data that have different data types. In this article, ... Read More
Cassandra: An Introduction to the Distributed NoSQL Database In today's fast-paced digital world, the volume and velocity of data generated is increasing at an unprecedented rate. To handle this big data, traditional relational databases such as MySQL and PostgreSQL are no longer sufficient. This is where NoSQL databases come into the picture, and one of the most popular NoSQL databases is Apache Cassandra. In this article, we will introduce you to the basics of Cassandra, a highly-scalable, distributed NoSQL database that is known for its ability to handle large amounts of data across multiple commodity servers. We will cover the ... Read More
Cascadeless in DBMS: Understanding and Implementing the Concept A database management system (DBMS) is a software that is used to store, organize, and manage data in a structured manner. One of the key concepts in DBMS is cascading, which refers to the automatic propagation of changes made to the data in one table to the related data in other tables. While cascading can be convenient in many cases, it can also lead to unintended consequences, such as data loss. To mitigate this, many DBMSs allow for the use of cascadeless operations, which prevent cascading from taking place. In this article, ... Read More
In the field of database management systems (DBMS), a candidate key is a set of one or more columns that can uniquely identify a row within a table. A candidate key is also known as a "unique identifier" or "primary key." In this article, we will discuss the importance of candidate keys in DBMS and how they are used to maintain the integrity and consistency of a database. What is a Candidate Key? A candidate key is a set of one or more columns that can be used to uniquely identify a row within a table. In other words, no ... Read More
Introduction In a database management system (DBMS), the scheduler is responsible for managing the execution of concurrent transactions. The scheduler uses a schedule, which is a sequence of actions that the DBMS must execute, to ensure that the system remains in a consistent state and that concurrent transactions do not interfere with each other. There are two types of schedules: serial schedules and non-serial schedules. In this article, we will discuss the calculation of both types of schedules in a DBMS. Serial Schedules A serial schedule is a schedule in which all transactions are executed one after another, without any ... Read More
In this article, we will learn how to create a user interface using python. What is GUI? The term "Graphical User Interface" (or "GUI") refers to a set of visual elements that may be interacted with in computer software to display informational and interactive items. In response to human input, objects may change appearance characteristics like as color, size, and visibility. Graphical components like icons, cursors, and buttons can be enhanced with audio or visual effects like transparency to create a graphical user interface (GUI). If you want more people to use your platform, you need to make sure it ... Read More