DataBase

A database or disc symbol for groff pic

 define disc { [
        BOT: ellipse width 0.5 ht 0.2
        X: box invis fill 0 width 0.5 ht 0.5 with .sw at BOT.w
        TOP: ellipse width 0.5 with .w at X.nw ht 0.2
        L: line from X.sw to X.nw
        R: line from X.se to X.ne
 ] }

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