db_design.gv

digraph g {
fontname="Helvetica,Arial,sans-serif"
splines=ortho
node [fontname="Helvetica,Arial,sans-serif"]
edge [fontname="Helvetica,Arial,sans-serif"]
node [
fontsize = "16"
];
edge [
];

// nodes
"text" [
label = "Text"
shape = "record"
];

"chapter" [
label = "Chapter"
shape = "record"
];

"manuscript" [
label = "Manuscript"
shape = "record"
];

"line" [
label = "Line"
shape = "record"
];

"mline" [
label = "ManuscriptLine"
shape = "record"
];

"variant" [
label = "Variant"
shape = "record"
];

"fragment" [
label = "Fragment"
shape = "record"
];

// edges
"chapter" -> "text" [
id = 0
];

"manuscript" -> "chapter" [
id = 1
];

"line" -> "chapter" [
id = 2
];

"variant" -> "line" [
id = 3
];

"mline" -> "variant" [
id = 4
];

"mline" -> "manuscript" [
id = 5
];

"fragment" -> "manuscript" [
id = 6
dir = both
style = dashed
xlabel = "museum_number"
];
}