Glossary index

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Data and analytics

Perfect Graph

A perfect graph is a type of graph in which the chromatic number of every induced subgraph equals the size of the largest clique in that subgraph. This means that for any induced subgraph, the…

Data and analytics

Performance Dashboard

A Performance Dashboard is a data visualization tool that graphically represents key performance indicators (KPIs) of an organization or project. Its main goal is to facilitate real-time monitoring…

Data and analytics

Performance Graphing

Performance graphs are visual representations that display performance data collected by monitoring systems. These tools allow IT administrators to visualize the status and health of their…

Data and analytics

Performance Indicators

Performance Indicators, also known as KPIs (Key Performance Indicators), are measurable metrics used to evaluate a company's performance over time. These indicators allow organizations to measure…

Data and analytics

Performance Insights

Performance Insights in the context of Business Intelligence (BI) tools and data warehousing refers to an essential feature that provides detailed information about database performance. This…

Data and analytics

Performance Overhead

Performance overhead in the context of SQL query optimization refers to the additional resources required to execute a query, which can negatively impact the overall performance of a database. This…

Data and analytics

Performance Recording

Performance Recording in Tableau is an essential feature that allows users to analyze the performance of their dashboards and visualizations. This tool provides detailed information about data load…

Data and analytics

Performance trends

Performance trends refer to the patterns observed in a business's performance metrics over time. These metrics can include key performance indicators (KPIs) such as sales, costs, customer…

Data and analytics

PERIOD

The 'Period' in the context of DAX (Data Analysis Expressions) functions refers to a specific duration of time used in calculations within data models, particularly in business intelligence tools…

Data and analytics

Persistence Layer

The persistence layer is the part of a software application that manages the storage and retrieval of data. This layer acts as an intermediary between the business logic of the application and the…

Data and analytics

Persistent

Persistent refers to data that is retained even after the application is closed. This concept is fundamental in the field of computing, as it allows information not to be lost when a process ends or…

Data and analytics

Persistent Data

Persistent data refers to data that remains available and accessible even after the process that created it has ended. This characteristic is fundamental in the field of computing, as it allows…

Data and analytics

Persistent State

The 'Persistent State' in data processing frameworks refers to the ability to store data durably, allowing this data to survive system failures. This state is used in stream and batch processing…

Data and analytics

Personalized Dashboard

A personalized dashboard is a data visualization tool that adapts to the specific needs and preferences of a user. This type of dashboard allows users to select and organize the information they want…

Data and analytics

PHP-Excel

PHP-Excel is an open-source library designed to facilitate the reading and writing of Excel files in the PHP programming language. This tool allows developers to interact with Excel documents…

Data and analytics

PHP-Redis

PHP-Redis is a PHP extension designed to facilitate interaction between PHP applications and the Redis in-memory storage system. Redis, which stands for 'Remote Dictionary Server', is a NoSQL…

Data and analytics

Physical Data Model

The physical data model is a detailed representation of the data structures and relationships in a database, focusing on how data is stored in hardware. This model includes aspects such as the…

Data and analytics

Physical Design

Physical design refers to the structure of data storage in a database, encompassing how data is organized and stored in hardware. This process involves selecting data structures, defining indexes…

Data and analytics

Physical Schema

The physical schema in data management refers to the actual structure of data storage in a database, including tables and relationships. This schema defines how data is organized in the underlying…

Data and analytics

Pictogram

A pictogram is a visual symbol that represents a concept, object, or idea through an image or a set of images. Its main characteristic is that it aims to be easily understandable, using graphic…

Data and analytics

Pie Chart

A pie chart is a visual representation of data used to show numerical proportions of a total set. This type of chart is presented in the form of a circle divided into sections or 'slices', where each…

Data and analytics

Pila

A stack is a data structure that follows the Last In, First Out (LIFO) principle. This means that the last element added to the stack is the first one to be removed. Stacks are fundamental in…

Data and analytics

Pillow

Pillow is a Python imaging library that adds image processing capabilities to your Python interpreter. This library is a fork of the original PIL (Python Imaging Library), which became obsolete and…

Data and analytics

Pipeline Architecture

Pipelining architecture is a system design that allows data processing through a series of sequential stages. In this approach, data flows through different modules or components, each performing a…