Section: 3. týždeň - 06.10.2025 - 10.10.2025 | Databázové systémy

Section outline

Normalizácia a denormalizácia tabuliek, práca s dotazmi.

Správna databáza by mala spĺňať niekoľko podmienok. K správnej tvorbe databáz patria aj podmienky normalizácie a denormalizácie údajov. Proces rozdelenia údajov do viacerých tabuliek sa nazýva normalizácia údajov. Existuje niekoľko stupňov normalizácie; prvá až tretia fáza sú najjednoduchšie na pochopenie a implementovanie a vo všeobecnosti postačujú pre väčšinu aplikácií. Hoci vyššie úrovne normalizácie sú možné, zvyčajne ich všetci okrem väčšiny skúsených a náročných vývojárov ignorujú.

Select activity Prednáška

Prednáška
Select activity Tvorba návrhu relačnej databázy

Tvorba návrhu relačnej databázy Book
Select activity Bookstore_normalizacia

Bookstore_normalizacia File
Select activity Cvičenie

Cvičenie
Select activity Úlohy 2

Úlohy 2 File
Select activity Kritériá v dotazoch

Kritériá v dotazoch File
Select activity Zakaznici_upravene_06_10_2025

Zakaznici_upravene_06_10_2025 File
Select activity Typy spojení tabuliek a dotazov

Typy spojení tabuliek a dotazov File
Select activity Úlohy 3

Úlohy 3 File

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Section outline

October 2025