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The Relational Model and SQL DDL

Authored by Tomer Sagi

Computers

University - Professional Development

Used 16+ times

The Relational Model and SQL DDL
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5 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

למה מקבילה קבוצת ישויות במודל הקונספטואלי -במודל הרלציוני ובמסד נתונים רלציוני

רלציה

יישות

טבלה

מפתח על

קשר

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

מה הדרך הכונה להמרת התרשים לטבלאות

ARTIST(ANR, aname);SINGER(ANR,music_style),ACTOR(ANR)

ARTIST(ANR, aname);SINGER(ANR,music_style),ACTOR(ANR)

SINGER(ANR, aname, music_style),ACTOR(ANR, aname)

ARTIST(ANR, aname);SINGER(ANR,music_style),

3.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Which of the following are SQL-DDL statements

CREATE TABLE...

CREATE RELATION...

DROP SCHEMA...

DROP RELATIONSHIP...

SELECT fieldName1 FROM table1...

4.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Which of the following can be done with ALTER TABLE?

Delete a column

Delete a constraint

Delete a table

Delete a schema

Add a default value

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

What type of diagram is this?

ER Diagram

EER Diagram

Class Diagram

Schema Diagram

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