logo

Crowdly

Browser

Add to Chrome

Questions Bank (1461792 total)

Schéma relationnel :

  1. Employee (EmployeeID, FirstName, LastName, Email, Phone, HireDate, Salary, #DepartmentID)
  2. Department (DepartmentID, DepartmentName, #ManagerID)
  3. Project (ProjectID, ProjectName, StartDate, EndDate, Budget)
  4. Employee_Project (#EmployeeID, #ProjectID, Role, AssignmentDate)

Explication des relations :

  • Employee (EmployeeID) est la clé primaire.
  • Department (DepartmentID) est la clé primaire.
  • Project (ProjectID) est la clé primaire.
  • Employee_Project (#EmployeeID, #ProjectID) est une clé primaire composite (relation plusieurs-à-plusieurs entre Employee et Project).
  • Employee(#DepartmentID) → Department(DepartmentID) : Un employé appartient à un département.
  • Department(#ManagerID) → Employee(EmployeeID) : Un manager est un employé.
  • Employee_Project(#EmployeeID) → Employee(EmployeeID)
  • Employee_Project(#ProjectID) → Project(ProjectID)
QUESTION
Quelle requête sélectionne les employés dont le salaire est supérieur à au moins un employé du département 2 ?

A) SELECT * FROM Employee WHERE Salary > ANY (SELECT Salary FROM Employee WHERE DepartmentID = 2);

B) SELECT * FROM Employee WHERE Salary > (SELECT MAX(Salary) FROM Employee WHERE DepartmentID = 2);

C) SELECT * FROM Employee WHERE Salary = ALL (SELECT Salary FROM Employee WHERE DepartmentID = 2);

D) SELECT * FROM Employee WHERE Salary < (SELECT Salary FROM Employee WHERE DepartmentID = 2);

0%
0%
0%
0%
View this question
Which of the following examples does not identify an avenue for a firm to sustainably outperform competitors?
0%
0%
0%
0%
View this question
View this question

Warum ist das DIV-Element als „Container“ in HTML-Layouts so flexibel?

❌
❌
✅
❌
View this question

Welche Aussagen über Block- und Inline-Elemente in HTML sind korrekt?

✅
❌
❌
✅
View this question

Welche Regeln gelten für das id-Attribut in HTML?

❌
❌
✅
✅
✅
View this question

Was unterscheidet eine id von einer CSS-Klasse in HTML?

❌
❌
✅
❌
View this question

Welche Aussagen zur Breitenberechnung eines Elements im CSS Box Model sind korrekt?

0%
0%
0%
0%
View this question

Welche Aussagen zur Margin-Eigenschaft in CSS treffen zu?

✅
0%
0%
0%
View this question

Was umfasst das CSS Box Model und welche Auswirkungen hat es?

0%
0%
0%
0%
0%
View this question