https://padlet.com/nashraf/x1wc74owypfr3l9z en-us 2023-01-05 05:03:39 UTC 2025-09-25 04:27:49 UTC hello@padlet.com https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437316969 one to one, one to many, many to many]]> 2023-01-09 06:28:49 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437316969 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437317274 an object that exists independently]]> 2023-01-09 06:29:12 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437317274 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437317603 one to one, one to many, many to many

]]> 2023-01-09 06:29:35 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437317603 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437317619 A specific choice of a minimal set of attributes.]]> 2023-01-09 06:29:37 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437317619 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318052 a key that contain value that uniquely identifies a table]]> 2023-01-09 06:29:57 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318052 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318190 The unique key to an entity]]> 2023-01-09 06:30:08 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318190 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318228 a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation]]> 2023-01-09 06:30:11 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318228 hamzaalhowainy2 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318329 One-to-One
One-to-Many
Many-to-Many]]> 2023-01-09 06:30:20 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318329 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318384 Entities represent the objects or concepts in the system being modeled. This can include customers, products, orders, etc.]]> 2023-01-09 06:30:22 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318384 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318430 Basically an object that contains variables, objects, and data. Entities function like tables]]> 2023-01-09 06:30:25 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318430 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318502 a set of attributes relating to the primary key of another table]]> 2023-01-09 06:30:30 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318502 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318557 a key used in a table that is the primary key in another]]> 2023-01-09 06:30:36 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318557 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318583 Relationships are the connections between entities and can be one-to-one, one-to-many, or many-to-many.]]> 2023-01-09 06:30:38 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318583 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318619 an entity is an object that exists independently]]> 2023-01-09 06:30:41 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318619 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318664 one-one
many-one
many-many]]> 2023-01-09 06:30:44 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318664 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318678 a key that refers to one data in another table that holds value]]> 2023-01-09 06:30:45 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318678 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318860 Primary keys are unique identifiers for each entity instance. They are used to ensure data integrity and to link related entities]]> 2023-01-09 06:30:52 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318860 hamzaalhowainy2 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318920 Primary key is a unique key that can link multiple entities to one entity.]]> 2023-01-09 06:30:56 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437318920 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319121 one to one, many to one, one to many

]]> 2023-01-09 06:31:11 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319121 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319125 a field describes a specific cell in a table / row of cells]]> 2023-01-09 06:31:12 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319125 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319285 an attribute or set of attributes in a table that uniquely identifies a row in another table. It is a key used to link two tables together]]> 2023-01-09 06:31:24 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319285 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319298 attributes are the factors/subjects in a entity]]> 2023-01-09 06:31:25 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319298 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319323 a field is the particular cell found in a table in each row, an attribute describes the entity]]> 2023-01-09 06:31:27 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319323 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319366 the primary key a unique identifier that can be used to pull desired entities]]> 2023-01-09 06:31:30 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319366 hamzaalhowainy2 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319698 Foreign key is the primary key of another entity, and links both entities together.]]> 2023-01-09 06:31:46 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319698 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319765 a foreign key is a primary key that is accepted in another table]]> 2023-01-09 06:31:52 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437319765 https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437320734 anything that stores data, effectively acts like variables with explicit data types]]> 2023-01-09 06:32:46 UTC https://padlet.com/nashraf/x1wc74owypfr3l9z/wish/2437320734