Add project files.

Model/TableCollection.cs

@@ -0,0 +1,70 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace DbTools.Model {
+    internal class TableCollection {
+        internal Dictionary<string, Table> Items { get; private set; } = new Dictionary<string, Table>();
+
+        public TableCollection() {
+            Items = new Dictionary<string, Table>();
+        }
+
+        public Table this[string tableName] {
+            get {
+                if (Items.ContainsKey(tableName)) {
+                    return Items[tableName];
+                }
+                return null;
+            }
+            set {
+                if (Items.ContainsKey(tableName)) {
+                    Items[tableName] = value;
+                } else {
+                    Items.Add(tableName, value);
+                }
+            }
+        }
+
+        public void Add(string tableName, string tableDefinition) {
+            Table table = new Table(tableDefinition) {
+                TableName = tableName
+            };
+            Add(table);
+        }
+
+        public void Add(Table table) {
+            if (!Items.ContainsKey(table.TableName)) {
+                Items.Add(table.TableName, table);
+            }
+        }
+
+        public bool Contains(string tableName) {
+            return Items.ContainsKey(tableName);
+        }
+
+        public string[] GetTableNames() {
+            return Items.Keys.ToArray();
+        }
+
+        public Table[] GetTables() {
+            return Items.Values.ToArray();
+        }
+
+        public int Count() {
+            return Items.Count;
+        }
+
+        public void Clear() {
+            Items.Clear();
+        }
+
+        public override string ToString() {
+            StringBuilder sb = new StringBuilder();
+            foreach (var kvp in Items) {
+                sb.AppendLine($"{kvp.Key}: {kvp.Value}");
+            }
+            return sb.ToString();
+        }
+    }
+}