Difference between associative entity and associative relationship attribute?

In ER diagramming, M:N relationships can have associative entities OR single associative attributes that describe the relationship. The difference is, associative entities must have a unique identifier and associative attributes don’t. According to the book, an associative entity must have:

1-all the relationships for the participating entity types are M:N relationships 

2-the resulting associative entity type has independent meaning to the end user and has an identifier 

3- the entity has one or more attributes 

4-the entity participates in 1 or more relationships independent of the entities rela

Related Posts:

  1. What is cardinality in Databases?
  2. ER-Diagram: Ternary Relationship – How to read properly?
  3. How can I convert MP3 file to a Base64 encoded string? [closed]
  4. What is a sanity test/check
  5. What is an instance variable in Java?
  6. Discord music bot not working
  7. Python Math – TypeError: ‘NoneType’ object is not subscriptable
  8. TCP vs UDP – What is a TCP connection? [duplicate]
  9. ssh : Permission denied (publickey,gssapi-with-mic)
  10. What is a Memory Heap?
  11. 403 Forbidden vs 401 Unauthorized HTTP responses
  12. Advanced AREL or just Rails Query for has_many through search by association
  13. “If not” condition statement in python
  14. How can I sort a dictionary by key?
  15. What does ERR_SPDY_PROTOCOL_ERROR mean in nginx?
  16. Difference between binary semaphore and mutex
  17. Python Logic of ListNode in Leetcode
  18. What is the difference between a strongly typed language and a statically typed language?
  19. How do I learn WebGL the fast way?
  20. What is the meaning of t=”shared” in a formula element?
  21. MySQL Every derived table must have its own alias
  22. How to print out a backslash in LaTeX
  23. Echo newline in Bash prints literal \n
  24. Proper shebang for Python script
  25. AttributeError: can’t set attribute
  26. How to kill a running Spark application?
  27. Log to the base 2 in python
  28. Sqoop Incremental Import
  29. What does it mean by word size in computer?
  30. Python setup.py develop vs install
  31. Hidden field “ufprt” being added to Razor Umbraco Form – Why?
  32. Raise to power in R
  33. APDU command to read Track1/track2 data from NFC card and MobileApp
  34. enum to string in modern C++11 / C++14 / C++17 and future C++20
  35. ORA-29913: error in executing ODCIEXTTABLEOPEN callout when inserting csv into oracle
  36. Reason for the exception java.lang.VerifyError: Bad type on operand stack
  37. git: fatal unable to auto-detect email address
  38. R error which says “Models were not all fitted to the same size of dataset”
  39. pandoc document conversion failed with error 43 : pdflatex: The memory dump file could not be found
  40. ERROR: transport error 202: bind failed when starting Tomcat 7 in debug mode
  41. How to check whether a Button is clicked by using JavaScript
  42. jQuery onclick not firing on dynamically inserted HTML elements?
  43. What is correct media query for IPad Pro?
  44. simple IPython example raises exception on sys.exit()
  45. How to get a minecarft session ID?
  46. Factory Pattern. When to use factory methods?
  47. How to send a PUT/DELETE request in jQuery?
  48. Arithmetic Overflow in mips
  49. How to change angular port from 4200 to any other
  50. Render HTML string as real HTML in a React component
  51. How to draw lines in Java
  52. Styling Select Drop down box
  53. NoClassDefFoundError in Java: com/google/common/base/Function
  54. Where are the ampersand and vertical bar characters used in Python?
  55. Which font is used in MS-DOS?
  56. Google Gmail – “The conversation that you requested could not be loaded”
  57. Python: What OS am I running on?
  58. How can I diff 2 files while ignoring leading white space
  59. Converting time stamps in excel to dates
  60. The name ‘InitializeComponent’ does not exist in the current context
  61. What is “pass-by-name” and how does it work exactly?
  62. is it possible to get the MAC address for machine using nmap
  63. Import error No module named skimage
  64. Java: Not a statement
  65. Passing a hexadecimal value into a module in Verilog
  66. mport win32ui in python 3.6
  67. Empty functions in Javascript
  68. Solr: how to delete a collection?
  69. How to print a int64_t type in C
  70. How to store data in the flash memory of a Arduino Uno (ATmega328p)
  71. Call to undefined function `get_plugin_data()`
  72. Contact Form 7 – Execute code AFTER mail send [closed]
  73. TwentyTwentyTwo – How to add PHP logic to Post templates?
  74. How can I trash multiple posts at once from the front end?
  75. Maintenance holding page while migrating website
  76. Multiple og:image for Facebook
  77. Rendering javascript in render_callback php Code
  78. Customized Essay Writing Service
  79. Exclude categories with only sticky posts OR count sticky post of specific category
  80. What is a Pem file and how does it differ from other OpenSSL Generated Key File Formats?
  81. How to set environment variable in systemd service?
  82. Symlink not updating as expected when using an absolute with relative path
  83. How to include multiple domains in an spf TXT Record
  84. Physically locating the server
  85. Good tools that fit on a thumb drive [closed]
  86. How do you answer yes for yum install automatically
  87. All servers flooded by salt water, is it possible to recover data from multi-platter drives?
  88. How to check if I’m in screen session?
  89. How to zip/unzip files in Powershell?
  90. Cooling Server Closet – No A/C Is Possible
  91. Is it better practice to buy RAID disks individually vs. in bulk?
  92. What range of MAC addresses can I safely use for my virtual machines?
  93. What sysadmin things should every programmer know?
  94. Why do systems generally disable virtualization by default in BIOS settings?
  95. 10 servers to administer and I’m a history major [closed]
  96. Making `wget` not save the page
  97. How do I list all connected Salt Stack minions?
  98. How to get Apache2 to redirect to a subdirectory
  99. What does that mean: packages excluded due to repository priority protections
  100. How can I set a short timeout with the ping command?

Leave a Comment