\usepackage[none]{hyphenat}                                             % avoid hypenation
\usepackage{ragged2e}                                                   % more powerful text alignment
\usepackage[nonumberlist]{glossaries}
\usepackage{glossary-longextra}
\makeglossaries

% allow using hyperlinked short forms in the same way as \glsdesc etc.
\newcommand{\glsshort}[1]{\glslink{#1}{\glsentryshort{#1}}}

\newglossarystyle{mystyle}{
    \setglossarystyle{long-booktabs}
    \renewcommand{\glsgroupskip}{}
    \renewcommand{\glossaryheader}{
        \toprule
        \bfseries Term &
        \bfseries Abbr &
        \bfseries Definition
        \tabularnewline\midrule\endhead
        \bottomrule\endfoot
    }
    \newlength{\glsnamewidth}
    \newlength{\glsshortwidth}

    \setlength{\glsnamewidth}{0.35\linewidth}
    \setlength{\glsshortwidth}{0.1\linewidth}
    \setlength{\glsdescwidth}{0.65\linewidth}%

    \renewenvironment{theglossary}{
        \begin{longtable}[l]{p{\glsnamewidth}p{3em}p{\glsdescwidth}}}%
        {\end{longtable}
    }%

    \renewcommand{\glossentry}[2]{%  Change the displayed items
            \RaggedRight{\glstarget{##1}{\glossentryname{##1}}} &
            \RaggedRight{\glsentryshort{##1}} &
            \RaggedRight{\glossentrydesc{##1}.} \tabularnewline
    }
    % format first occurency <name> (<short>), use %glsshort{<key>} to print
    % only abbreviation, for the rest use %gls as usual
    \renewcommand{\glsentryfmt}{\glsgenentryfmt\ifglsused{\glslabel}{}{\space(\glsentryshort{\glslabel})}}

    \renewcommand{\arraystretch}{1.2} % more spacing between entries
}
\setglossarystyle{mystyle}

% D
\newglossaryentry{dbms}{name={Database Management System},description={Lorem
ipsum dolor sit amer consecutur adipscin elit Lorem ipsum dolor sit
ame Lorem ipsum dolor sit
ame Lorem ipsum dolor sit
ame},short={DBMS}}
\newglossaryentry{db}{name={Database},description={Lorem ipsum dolor sit
ame},short={DB}}

% E
\newglossaryentry{ects}{
  name={European Accumulation Credit Transfer System},
  short={ECTS},
  description={Test test},
}

\cleardoublepage
\phantomsection
\addcontentsline{toc}{chapter}{Glossary}
\printglossary

\gls{ects} 2nd usage \gls{ects}
I like \glsshort{dbms}