How Does One Choose Between the SQL Right Join Inner vs. Outer in SQL? An SQL Join is an operation of accessing the data from two or more tables or relations. In simple terms, a join occurs whenever multiple tables or relations appear in the FROM clause of a query, as described by Bhanuprakash, Nijagunarya & …
Read MoreUnveiling Attribute & Relationship Inheritance in EER Diagrams
Feb 13, 2024 · 3 min read · database-programming sql-tutorial data-management relational-databases ·The Mechanism of Attribute/Relationship Inheritance and Why it Useful The enhanced entity-relationship (EER) diagram includes the principles of the entity-relationship diagram with the addition of some other concepts as described by Tupper (2011). The additional concepts include subclasses and superclasses, …
Read MoreEarned Value Management (EVM) and Agile Project Management - A Comparison
Feb 12, 2024 · 3 min read · project-management agile evm burn-up-chart burn-down-chart Earned Value Management ·Earned Value Management (EVM) and Agile Project Management - A Comparison This article explores the similarities and differences between EVM and burn charts in traditional and agile project management, discussing their applications and benefits. Earned Value Management (EVM) provides one of the most effective methods …
Read MoreSummarize Enterprise Project Management (EPM) and Project Management Office (PMO) This article summarizes the Enterprise Project Management (EPM) model and Project Management Office (PMO) and how they relate to Agile Scrum and the Scaled Agile Framework (SAFe). Summarize the Enterprise Project Management (EPM) model …
Read MoreMapping EER Model Constructs to Relations in Your Database
Feb 10, 2024 · 3 min read · database-modeling data-management relational-theory database-programming relational-databases ·The Options for Mapping EER Model Constructs to Relations There are many ways of mapping the constructs from the EER model into the relational model. There are mapping of specializations or generalizations, shared subclasses, or multiple inheritance and categories. Several options are available for mapping several …
Read MoreObject vs. Relational Navigating the Key Differences in Database Design
Feb 9, 2024 · 2 min read · data-management database-modeling technology-comparison object oriented relational-theory object-theory ·The main differences between designing relational and object databases** Object databases and (ODB) relationships have three distinct differences: how relationships are handled, how inheritance is handled, and the timing of specifying operations in object databases compared to relational databases as described by …
Read MoreThe cursor and usage in embedded SQL The SQL language, by default, uses set-at-a-time processing. While this is used in most SQL queries, sometimes there is a need to loop through the set and execute a stored procedure or many different SQL statements for each row fetched. SELECT statements that return more than one …
Read MoreDifferent Parameter Types in Database Cost Functions and Their Information Storage The cost function is part of the query cost optimization module of the database management system. Elmasri & Navathe (2015) indicate that the optimizer heuristic rules or query transformations are not the only dependencies used for …
Read MoreEnhancing Project Communication Essential Tools and Techniques in Agile Scrum Our company is using Agile Scrum to manage the project. The project communication for Agile Scrum is different from normal project communication. There are a few Agile Scrum techniques for increasing communications. This post covers three. …
Read MoreA Summary of the two most important tools and techniques used in estimating software project Estimating is attempting to look into the future and predict the time and money needed to produce a result, as Verzuh (2015) points out. Since an estimate is, well, an estimate, it can be wrong sometimes, and stakeholders …
Read More