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Mathematics
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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Ce este un dashboard (panou de bord):
a. Rapoarte ce permit operatii dinamice de drill-down, slicing, dicing si filtrari realizate de utilizatori;
b. Rapoarte pentru monitorizarea si vizualizarea pe un singur ecran, folosind elemente vizuale, a celor mai importante informatii despre perfomantele de business;
c. Rapoarte interactive, legate direct la depozitul de date ce permit si modificarea datelor din depozitele de date;
d. Aplicatii care au rolul de a ajuta utilizatori sa-si creeze propriile lor interogari sis a interpreteze rezultatele;
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Care sunt principalele caracteristici ale unui depozit de date?
a. Orientare pe subiecte, caracter istoric, consolidarea datelor, integrare;
b.Dimensiunile, atributele, granularitatea si agregarea;
c.Dimensiunile, atributele, ierarhiile;
d.Orientarea pe subiecte, caracter istoric, nevolatilitate, integrare;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Intr-un deposit de date, schema multidimensionala trebuie sa include in mod obligatoriu dimensiunea:
a. Timp;
b. Data;
c.Moneda;
d. Valoare;
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Stocarea orientate pe coloane a datelor ofera:
a. Rata de compresie la nivel de linie mica;
b. Avantaj in realizarea accesului aleatoriu deoarece indecsii sunt configurati la nivel de
inregistrare;
c. Un grad mare de similitudine al infoormatiilor stocate impreuna;
d. Adaugare si stergere facila de inregistrari;
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Schema fulg de zapada a unui deposit de date:
a. Nu aplica normalizare;
b. Aplica normalizare pe tabelele dimensiune;
c. Aplica normalizare pe tabela de fapte;
d. Aplica normalizare pe toate tabelele.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. O baza de date de staging permite:
a. Inregistrarea etapelor de construire a depozitului de date;
b. Urmarirea etapelor de procesare a datelor de intrare;
c. Maparea intre relational si multidimensional;
d. Realizarea operatiilor ETL separate de sursa si destinatia de date;
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Pasul de transformare a procesului ETL presupune:
a. Curatarea datelor si aplicarea regulilor de business care asigura validarea calitatii
datelor;
b. Utilizarea tabelelor de mapare pentru asigurarea corespondentei intre sursa si destinatie;
c. Colectarea informatiilor si documentarea sistemelor sursa;
d. Preformatarea datelor in formatul fizic intern;
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