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Database - 🧠 ANSWER ✔✔Organized collection of logically related data
Data - 🧠 ANSWER ✔✔Meaningful representation of objects and events
Structured Data - 🧠 ANSWER ✔✔· Numbers, text, dates
Unstructured Data - 🧠 ANSWER ✔✔Images, video, documents
Database management system - 🧠 ANSWER ✔✔A data storage and
retrieval system which permits data to be stored non-redunantly while
making it appear to the user as if the data is well integrated
XML Rules - 🧠 ANSWER ✔✔Document must have exactly one top level
element ( or root element) and all other elements must be nested within it
, XML Rules - 🧠 ANSWER ✔✔Elements must be properly nested
XML Rules - 🧠 ANSWER ✔✔Each element must have a start and end tag
XML Rules - 🧠 ANSWER ✔✔The element type name in a start stage must
exactly match the end tag
XML Rules - 🧠 ANSWER ✔✔Element type names are case sensitive
XML Rules - 🧠 ANSWER ✔✔Quoted strings in attributes can use either
single or double quotes
Cardinality - 🧠 ANSWER ✔✔describes things like 1 to many
Degree of relationships - 🧠 ANSWER ✔✔Describes things like binary,
ternary
Business rules - 🧠 ANSWER ✔✔Cardinality
Business rules - 🧠 ANSWER ✔✔participation (optional vs mandatory)
1NF - 🧠 ANSWER ✔✔Remove mutlivalued attributes
2NF - 🧠 ANSWER ✔✔Remove partial key dependencies