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Quiz 5 topuri

Professional Development

10 Qs

quiz-placeholder

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Quiz 5 topuri

Quiz 5 topuri

Assessment

Quiz

Education

Professional Development

Practice Problem

Medium

Created by

Lucian Lazar

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care sunt proprietatile ierarhiilor?

Se stocheaza ca si leagturi parinte copil

Se stocheaza in aceeasi tabela

Pot fi reprezentate ca si arbore

Toate celelate variante

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Conditia care defineste punctul de start al unei interogari ierarhice se pune in clauza?

SELECT

FROM

WHERE

START WITH

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care este sintaxa clauzei FETCH intr-o interogare Oracle?

FETCH FIRST x ROWS ONLY

FETCH JUST FIRST x ROWS

FETCH FIRST x RECORDS

FETCH TOP x ROWS

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ce functie analitica folosim pentru a afisa rangul inregistrarilor permitand pauze?

RANK

DENSE_RANK

LAG

LEAD

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cand vrem sa afisam copiii unui element intr-o interogare ierarhica, ce coloana folosim langa cuvantul cheie PRIOR?

Coloana parinte

Coloana copil

Oricare coloana

Nici una din celelalte variante

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ca sa afisam distinct numarul de valori nenule ce functie folosim?

COUNT

COUNT DISTINCT

COUNT NVL

Nici una din celelalte variante

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ce aduce LEFT JOIN din doua multimi?

Ce este comun

Ce este doar in dreapta

Ce este doar in stanga

Ce este comun si doar in stanga

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