Podcast Beta
Questions and Answers
Which normal form requires that there are no transitive dependencies?
What is the purpose of a dependency diagram?
In the unnormalized dataset, why is it not in 1NF?
What is the attribute known as when it fully functionally depends on a composite key?
Signup and view all the answers
Which of the following best describes normalization in the database design process?
Signup and view all the answers
Which normal form assigns attributes to tables based on determination?
Signup and view all the answers
Denormalization results in increased performance and greater data redundancy.
Signup and view all the answers
Which of the following is NOT one of the normal forms mentioned in the text?
Signup and view all the answers
Which attribute represents the number of hours an employee worked on a specific project?
Signup and view all the answers
What does the CHG_HOUR attribute represent?
Signup and view all the answers
What is the purpose of normalization in database design?
Signup and view all the answers
What is a surrogate key?
Signup and view all the answers
Which term describes a functional dependence in which an attribute depends on only part of the primary key?
Signup and view all the answers
In the 'Students' table, what attribute is fully functionally dependent on 'StudentID'?
Signup and view all the answers
In the 'Students' table, what attribute is partially dependent on 'StudentID'?
Signup and view all the answers
What term describes a functional dependence among nonprime attributes?
Signup and view all the answers
In the 'Students' table, what attribute is indirectly dependent on 'StudentID' through 'MajorName'?
Signup and view all the answers
Which normal form describes a tabular format in which all key attributes are defined, there are no multi-valued attributes, and all attributes are dependent on the primary key?
Signup and view all the answers
What is the purpose of converting a table from First Normal Form (1NF) to Second Normal Form (2NF)?
Signup and view all the answers
In Second Normal Form (2NF), what type of dependencies should be eliminated by creating new tables?
Signup and view all the answers
What is the purpose of converting a table from Second Normal Form (2NF) to Third Normal Form (3NF)?
Signup and view all the answers
Which of the following statements is true about the normalization process?
Signup and view all the answers
What is the objective of the normalization process?
Signup and view all the answers
In the first example given, why is 'EmployeeName' not fully functionally dependent on 'EmployeeID'?
Signup and view all the answers
In the second example given, why is 'EmployeeName' fully functionally dependent on 'EmployeeID'?
Signup and view all the answers
According to the data-modeling checklist, what should attribute names be?
Signup and view all the answers
According to the data-modeling checklist, what should entity names be?
Signup and view all the answers
According to the data-modeling checklist, what should relationship names be?
Signup and view all the answers
According to the data-modeling checklist, what should entities represent?
Signup and view all the answers
According to the data-modeling checklist, what should be clearly defined for each entity?
Signup and view all the answers
According to the data-modeling checklist, what should be included in the naming conventions for entity names?
Signup and view all the answers
According to the data-modeling checklist, what should attribute names be?
Signup and view all the answers
According to the data-modeling checklist, what should entity names be?
Signup and view all the answers
According to the data-modeling checklist, what should relationship names be?
Signup and view all the answers
What should be clearly defined for each entity according to the data-modeling checklist?
Signup and view all the answers
According to the data-modeling checklist, what should entities represent?
Signup and view all the answers
What should attribute names use as a prefix according to the data-modeling checklist?
Signup and view all the answers
What should not be contained in attribute names according to the data-modeling checklist?
Signup and view all the answers
What should be unique within the model according to the data-modeling checklist?
Signup and view all the answers
What should not be a reserved word according to the data-modeling checklist?
Signup and view all the answers
What should document abbreviations, synonyms, and aliases for each entity according to the data-modeling checklist?
Signup and view all the answers
ما هي الخطوة التالية بعد تحديد التخطيط المطلوب من القائمة؟
Signup and view all the answers
ما هو الرمز الذي يجب النقر عليه لتغيير عدد الشاشات؟
Signup and view all the answers
كم عدد الكاميرات المعروضة على الشاشة عند عرض كاميرا واحدة؟
Signup and view all the answers
ما هو الرمز الذي يجب النقر عليه لتحديد عدد نوافذ العرض؟
Signup and view all the answers
كم عدد الكاميرات المعروضة على الشاشة عند عرض 6 كاميرات؟
Signup and view all the answers
ما هو التصنيف الذي يستخدم لهذا النظام؟
Signup and view all the answers
ما هو الهدف من تدريب مشغلي ومشرفي غرفة التحكم وأنظمة المرئية؟
Signup and view all the answers