Implementing Exercise system in database with API and frontend visualization

software/backend/models/exercises/exercise.model.ts

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+import { BelongsTo, Column, ForeignKey, Model, Table } from "sequelize-typescript";
+import { ExerciseGroup } from "./exerciseGroup.model";
+
+@Table({ timestamps: false })
+export class Exercise extends Model {
+  @Column
+  nameDe: String
+
+  @Column
+  nameEn: String
+
+  @Column
+  exerciseNr: Number
+
+  @Column
+  descriptionDe: String
+
+  @Column
+  descriptionEn: String
+
+  @Column
+  solved: Boolean
+
+  @ForeignKey(() => ExerciseGroup)
+  @Column
+  exerciseGroupId: Number
+
+
+  // Relations
+
+  @BelongsTo(() => ExerciseGroup)
+  exerciseGroup: ExerciseGroup
+}