Hierarchical structured data vizualization in web-applications

Rad proučava koncepte stvaranja web-aplikacija, kao i načine zapisa podataka u bazu. Alat TreeGrid je odabran za testiranje nad operacijama poput filtriranja, grupiranja i sl. Kreirane su dvije aplikacije po principu debeli klijent i tanki klijent, te su nad bazom kreirana dva modela zapisa, jedan u kojemu su svi podaci za prikaz zajedno u jednoj tablici, te drugi gdje su podaci podijeljeni po entitetima, tj. senzorima. Provedeni su testovi za usporedbu dva koncepta (tanki i debeli klijent), kao i za usporedbu dva modela nad bazom (centralne i raspodijeljene tablice), te je očekivano koncept tankog klijenta bio bolji, kao i model centralnog zapisa u bazu podataka.This master thesis studies concepts of developing web-applications and database organization methods. Tool TreeGrid is chosen for the data visualization operations like sorting, grouping, i.e. Two web-applications were created, by using fat and thin client principle. Two database models were created, one in which all data is aggregated in one table, and second where data is divided by entities, i.e. sensors. Tests were conducted to compare two web-application concepts (thin and fat client), and to compare two database models (central and distributed tables). As expected, thin client concept was better, as the model of central tables in database