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misy 5335 Exam/ 93 Questions with Definitive Solutions/ . Terms like: column - Answer: stores a characteristic common to all rows...A logical group of bytes in a row of a relation or a table. The meaning of a column is the same for every row of the relation, and represents an attribute of a rel...

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  • October 1, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
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misy 5335 Exam/ 93 Questions with Definitive
Solutions/ 2024-2025.
column - Answer: stores a characteristic common to all rows...A logical group of
bytes in a row of a relation or a table. The meaning of a column is the same for
every row of the relation, and represents an attribute of a relation.


Field - Answer: The central table in a dimensional database. Its attributes are
called measures. See also measure.
...(1) A logical group of bytes in a record used with file processing. (2) In the
context of the relational model, a synonym for attribute.


modification actions - Answer: insert, update, and delete...An action that changes
the value of a data item.

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, Structured Query Language (SQL) - Answer: international standard, emerged as
the leading technique for data definition and manipulation.


Using SQL, you can? - Answer: reconstruct lists from their underlying tables; you
can query for specific data conditions; you can perform computations on data in
tables; and you can insert, update, and delete data.


What is a Database System? - Answer: a database system has four components:
users, the database application, the database management system (DBMS), and
the database.


Why Use a Database? - Answer: A database is used to help people keep track of
things, and the most commonly used type of database is the relational database,
although nonrelational databases (which are used extensively in online
applications such as Facebook and Twitter) are now also widely used.


What are the Problems with Using Lists? - Answer: making changes to this list
causes ...modification problems.


Modification problem - Answer: A situation that exists when the storing of one
row in a table records facts about two themes or the deletion of a row removes
facts about two themes, or when a data change must be made in multiple rows
for consistency.



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