你唔係揀big data嘅話,真係避唔到嘅IT科得兩科:database 同 basic java programming
講少少呢兩科教幾多嘢:
database識畫ERO, 3rd normalization form, dependence diagrams, SQL識join table,係咁多。exam erd最多只有5個entities左右
java都只係學下for loop, if-then-else,寫下method,try-catch,仲有call api:arraylist同string tokenizer,係咁多。教試寫兩段code,每段都係一頁紙就夠。
呢堆嘢而家唔明好正常,因為係畀你阿哥睇,等佢同你解釋易唔易讀啦

讀完呢兩科之後,只要你有心避,唔揀big data,應該就冇乜IT嘢要讀