Cohesion

Duration: 7 min

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Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Programming, Data Structures, OOP & Java: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References, Language Design, Intro to Compilers, Visual Basics, Syntax Analysis: Bottom-Up, Object Oriented Technology
  3. Computer Networks, TCP/IP & Network Security: Introduction to CN, Data Communication, DLL: Flow Control, DLL: Access Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Access Technologies, Network Security, Society, Law & Ethics, Cloud Computing, Mobile Computing, Net Layer:Routing Protocol, Cyber Safety and Security
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  5. Digital Electronics / Boolean Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Analog-Digital Conversion
  6. Operating Systems & Linux: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, File Management, Disc Scheduling, Unix OS, Linux OS, Distributed Systems, Windows OS
  7. Data Base Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, File Organization & Indexing, Transaction Management, Concurrency Control, Database Security & Authorization, Database Recovery, Data Warehousing & Mining
  8. Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, HTML Basics, CSS, Emerging Technologies, JavaScript-Basics, .Net Programming, Electronic Data Interchange and E-Commerce, XML
  9. Computer Fundamentals, IT Basics & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer, Terms & Abbreviations, MS Office Applications, Instr Formats & Modes, Floating Point Rep
  10. Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  11. Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, extras, Fundamentals of Systems and Information Systems
  12. Design & Analysis of Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  13. Mathematics - I, II, III, IV: Permutation and Combination, Logarithm, Linear Algebra, Algebra, Calculus, Trigonometry, Vectors, Set Theory, Functions, Relations, Propositional and Predicate Logic, Research Process Steps, Graph Theory
  14. Computer Graphics, Multimedia & Mobile Computing: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing, Multimedia
  15. Emerging Trends: Emerging Tech Trends, Knowledge Representation, Natural Language Processing
  16. Statistical Techniques: Probability, Statistics
  17. Interpolation - DI: Data Interpretation
  18. Basis of Physics: Physics
  19. Previous Year Paper:
  20. Business Studies and Management: Business Communication, Business Organization and Management, Financial Accounting, Business Economics, Management Information System (MIS), Knowledge Management & New Economy
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a comprehensive lecture on the concept of cohesion in software engineering, presented by an instructor from Knowledge Gate Eduventures. The lecture begins by defining cohesion as a measure of the strength of the relationship between the functions within a software module. A central visual aid is a green, upward-pointing arrow diagram that ranks six types of cohesion from lowest to highest, with 'Coincidental' at the bottom and 'Functional' at the top. The instructor then systematically explains each type of cohesion, starting with the weakest, Coincidental Cohesion, which is defined as a module where functions have no meaningful relationship. The lecture progresses through Logical Cohesion (functions perform similar operations), Temporal Cohesion (functions are executed in the same time span), Procedural Cohesion (functions are part of a single algorithm), Communicational Cohesion (functions operate on the same data structure), and concludes with the strongest form, Functional Cohesion, where functions cooperate to perform a single, well-defined task. The video uses clear definitions and practical examples for each type, such as a module for mouse control, to illustrate the concepts. The presentation concludes with a 'Thanks for Watching' screen.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card for 'SOFTWARE ENGINEERING' and '#knowledgegate'. The main lecture begins, introducing the topic of 'Cohesion' with the definition: 'We mean the measure of functions strength of the module.' A green, arrow-shaped diagram is displayed, ranking six types of cohesion from 'Low' at the bottom to 'High' at the top. The types listed are, from bottom to top: Coincidental, Logical, Temporal, Procedural, Communicational, and Function. The instructor, Sanchit Jain, is visible in a small window, and the 'Knowledge Gate Educator' logo is present. The slide is static, and the instructor begins to explain the concept of cohesion.

  2. 2:00 – 5:00 02:00-05:00

    The lecture continues with a detailed explanation of the different types of cohesion, starting with 'Coincidental Cohesion'. The on-screen text defines it as 'the worst kind of cohesion where the only relationship between the functions which are present in a module is random or coincidental.' The instructor elaborates on this, emphasizing its poor quality. The visual remains the same, with the arrow diagram and the instructor's video feed. The instructor then moves on to the next type, 'Logical Cohesion', which is defined as 'All the elements of a module perform similar or slightly similar operations, for e.g. if mouse, printer, scanner functions are written in the same module.' The instructor provides a clear example to illustrate this concept.

  3. 5:00 – 7:27 05:00-07:27

    The instructor proceeds to explain the remaining types of cohesion. 'Temporal Cohesion' is defined as functions related by the fact that they must be executed in the same time span, with an example of two functions: one to catch an exception and another to flash an error message. Next, 'Procedural Cohesion' is described as functions related through a flow control, being part of an algorithm, with an example of checking file access permission and then opening the file. 'Communicational Cohesion' is explained as functions operating on the same data structure, using 'push' and 'pop' as an example. Finally, 'Sequential Cohesion' is defined as functions being part of a sequence with data dependency, such as a function providing data and another processing it. The lecture concludes with 'Functional Cohesion', where functions cooperate to perform a single function, using a mouse control module as an example. The video ends with a 'Thanks for Watching' screen.

The video presents a structured and progressive lesson on software cohesion, a fundamental concept in software design. It begins with a clear definition and a visual hierarchy that establishes the relative strength of different cohesion types. The instructor systematically deconstructs each type, starting from the weakest (Coincidental) and building up to the strongest (Functional), using a consistent format of definition and a practical example for each. This methodical approach, combined with the clear visual aid of the arrow diagram, effectively teaches the student to understand and differentiate between the various forms of cohesion, ultimately emphasizing that high cohesion, particularly functional cohesion, is a desirable goal in software engineering.

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