diff --git a/server/database/mongoose.js b/server/database/mongoose.js
new file mode 100644
index 0000000..ff12926
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+++ b/server/database/mongoose.js
@@ -0,0 +1,16 @@
+import mongoose from "mongoose";
+
+export const dbName = process.env.DB_NAME || "sm_db";
+export const mongoURI = process.env.MONGODB_URI || "mongodb://127.0.0.1:27017";
+
+// Connection documentation: https://mongoosejs.com/docs/connections.html
+try {
+    mongoose.connect(mongoURI, {
+        useNewUrlParser: true,
+        useUnifiedTopology: true,
+        dbName: dbName,
+    });
+} catch (error) {
+    console.error(error);
+}
+export { mongoose };
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diff --git a/server/middleware/Database.js b/server/middleware/Database.js
new file mode 100644
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+++ b/server/middleware/Database.js
@@ -0,0 +1,9 @@
+import { mongoose } from "../database/mongoose.js";
+
+export function needDatabase(res, req, next) {
+    if (mongoose.connection.readyState != 1) {
+        res.status(500).send("Internal server error: Database connection faulty.");
+    } else {
+        next();
+    }
+}
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diff --git a/server/schemas/Match.js b/server/schemas/Match.js
new file mode 100644
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+++ b/server/schemas/Match.js
@@ -0,0 +1,26 @@
+import mongoose from "mongoose";
+import ModelNameRegister from "./ModelNameRegister.js";
+
+const Types = mongoose.Schema.Types; // Some types require defining from this object.
+
+const matchSchema = new mongoose.Schema({
+    title: { type: String, required: true, trim: true },
+    dateTime: { type: Date, required: true },
+    public: { type: Boolean, required: true, default: true },
+    location: {
+        type: [Number],
+        required: true,
+        validate: {
+            validator: function (v) {
+                return v.length === 2;
+            },
+            message: "Invalid coordinate format (array not length of 2)"
+        }
+    },
+    creator: { type: Types.ObjectId, ref: ModelNameRegister.User },
+    participants: { type: [{ type: Types.ObjectId, ref: ModelNameRegister.User }], required: true, default: [] },
+    difficulty: { type: Number, required: true },
+    sport: { type: Types.ObjectId, ref: ModelNameRegister.Sport }
+});
+
+export default mongoose.model(ModelNameRegister.Match, matchSchema);
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diff --git a/server/schemas/ModelNameRegister.js b/server/schemas/ModelNameRegister.js
new file mode 100644
index 0000000..3c3b6e6
--- /dev/null
+++ b/server/schemas/ModelNameRegister.js
@@ -0,0 +1,5 @@
+export default {
+    Match: "match",
+    User: "user",
+    Sport: "sport"
+};
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diff --git a/server/schemas/Sport.js b/server/schemas/Sport.js
new file mode 100644
index 0000000..eb2e301
--- /dev/null
+++ b/server/schemas/Sport.js
@@ -0,0 +1,19 @@
+import mongoose from "mongoose";
+import ModelNameRegister from "./ModelNameRegister.js";
+
+const sportSchema = new mongoose.Schema({
+    name: { type: String, required: true, unique: true, trim: true },
+    minPlayers: { type: Number, required: true, default: 1 },
+    description: { type: String, required: true, trim: true }
+});
+
+sportSchema.pre("save", function (next) {
+    this.name = this.name.toLowerCase();
+    next();
+});
+
+sportSchema.statics.findByName = function (name) {
+    return this.findOne({ name: name.trim().toLowerCase() });
+};
+
+export default mongoose.model(ModelNameRegister.Sport, sportSchema);
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diff --git a/server/schemas/User.js b/server/schemas/User.js
new file mode 100644
index 0000000..46ea16a
--- /dev/null
+++ b/server/schemas/User.js
@@ -0,0 +1,78 @@
+import mongoose from "mongoose";
+import validator from "validator";
+import bcrypt from "bcrypt";
+import ModelNameRegister from "./ModelNameRegister.js";
+
+const Types = mongoose.Schema.Types;
+
+const userSchema = new mongoose.Schema({
+    email: {
+        value: {
+            type: String,
+            required: true,
+            minlength: 1,
+            trim: true,
+            unique: true,
+            validate: {
+                validator: validator.isEmail,
+                message: "String not email.",
+            }
+        },
+        public: { type: Boolean, required: true, default: false }
+    },
+    firstName: {
+        value: { type: String, required: true, trim: true },
+        public: { type: Boolean, required: true, default: false }
+    },
+    lastName: {
+        value: { type: String, required: true, trim: true },
+        public: { type: Boolean, required: true, default: false }
+    },
+    joinDate: { type: Date, default: Date.now, required: true },
+    phone: {
+        value: { type: Number, required: false, min: 0 },
+        public: { type: Boolean, required: true, default: false }
+    },
+    password: {
+        type: String,
+        required: true,
+        minlength: 8
+        // TODO: Custom validator for password requirements?
+    },
+    createdMatches: { type: [{ type: Types.ObjectId, ref: ModelNameRegister.Match }], required: true, default: [] },
+    participatingMatches: {
+        value: { type: [{ type: Types.ObjectId, ref: ModelNameRegister.Match }], required: true, default: [] },
+        public: { type: Boolean, required: true, default: false }
+    },
+    accessLevel: { type: Number, required: true, default: 0 }
+});
+
+userSchema.statics.credentialsExist = async function (email, password) {
+    let userModel = this;
+    let user = await userModel.findOne({ "email.value": email });
+    if (!user) {
+        return Promise.reject(new Error("Credentials do not exist."));
+    }
+    if (await bcrypt.compare(password, user.password)) {
+        return user;
+    }
+};
+
+userSchema.pre("save", function (next) {
+    let user = this;
+    if (user.isModified("password")) { // Only perform hashing if the password has changed.
+        bcrypt.genSalt(10, (err, salt) => {
+            bcrypt.hash(user.password, salt, (err, hash) => {
+                if (err) {
+                    throw err; // Probably not, but I'm gonna leave this here for now.
+                }
+                user.password = hash;
+                next();
+            });
+        });
+    } else {
+        next();
+    }
+});
+
+export default mongoose.model(ModelNameRegister.User, userSchema);
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