I read the Q/A "How to insert a row in postgreSQL pgAdmin?" from enter link description here , but it's for pgAdmin 3.
I just installed postgreSQL 9.6.2 with pgAdmin 4, but could not find the option shown in pgAdmin 3, which you can click to have an excel-like window where you can add and update data in a table without using SQL language (as per @KarelG). Does anyone know whether it stills exist in postgreSQL 9.6.2 with pgAdmin 4? Thanks.