更新内容

data/1.Neo4j 初阶/1.图数据库基本概念/1.数据库的分类一览/config.json

 {
     "node_id": "neo4j-0261ccb903994df281a2ec606b5d8c9e",
-    "keywords": [],
-    "children": [
-        {
-            "什么是图数据库": {
-                "keywords": [
-                    "图数据库"
-                ],
-                "children": [
-                    {
-                        "图论": {
-                            "keywords": [
-                                "节点",
-                                "边",
-                                "关系"
-                            ],
-                            "children": []
-                        }
-                    },
-                    {
-                        "RDF": {
-                            "keywords": [],
-                            "children": []
-                        }
-                    },
-                    {
-                        "属性图": {
-                            "keywords": [],
-                            "children": []
-                        }
-                    },
-                    {
-                        "原生图": {
-                            "keywords": [
-                            ],
-                            "children": []
-                        }
-                    }
-                ]
-            },
-            "什么时候需要图数据库": {
-                "keywords": [
-                    "图数据库"
-                ],
-                "children": []
-            },
-            "Neo4j 图数据库概览": {
-                "keywords": [
-                    "图数据库"
-                ],
-                "children": []
-            }
-        }
-    ],
+    "keywords": ["数据库", "图数据库"],
+    "children": [],
     "export": [
-        "helloworld.md"
+        "databases.json"
     ]
 }
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data/1.Neo4j 初阶/1.图数据库基本概念/1.数据库的分类一览/helloworld.json → data/1.Neo4j 初阶/1.图数据库基本概念/1.数据库的分类一览/databases.json

 {
     "type": "code_options",
-    "author": "幻灰龙",
-    "source": "helloworld.md",
+    "author": "shiny",
+    "source": "databases.md",
     "notebook_enable": false
 }
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data/1.Neo4j 初阶/1.图数据库基本概念/1.数据库的分类一览/databases.md

+# 数据库的分类
+
+当代数据库发展有如下几种。
+
+## 答案
+
+关系型数据库 RDBMS
+
+文档数据库
+
+时序数据库
+
+图数据库 Graph Database
+
+## 选项
+
+### A
+
+关系型数据库 RDBMS
+
+### B
+
+文档数据库
+
+### C
+
+时序数据库
+
+### D
+
+图数据库 Graph Database
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data/1.Neo4j 初阶/1.图数据库基本概念/1.数据库的分类一览/helloworld.md

-# Hello World
-
-Neo4J 可以通过 shell 直接写查询语句，也可以在 Java、Python 等语言中创建连接查询，以下哪个查询<span style="color:red">不是</span>图数据库 Neo4J 的查询？
-
-## 答案
-
-```sql
-SELECT name FROM Person
-LEFT JOIN Person_Department
-  ON Person.Id = Person_Department.PersonId
-LEFT JOIN Department
-  ON Department.Id = Person_Department.DepartmentId
-WHERE Department.name = "IT Department"
-```
-
-## 选项
-
-### MySQL查询
-
-```sql
-MATCH (p:Person)-[:WORKS_AT]->(d:Dept)
-WHERE d.name = "IT Department"
-RETURN p.name
-```
-
-### 使用JDBC查询Neo4J
-
-```java
-Connection con = DriverManager.getConnection("jdbc:neo4j://localhost:7474/");
-
-String query =
-    "MATCH (:Person {name:{1}})-[:EMPLOYEE]-(d:Department) RETURN d.name as dept";
-try (PreparedStatement stmt = con.prepareStatement(QUERY)) {
-    stmt.setString(1,"John");
-    ResultSet rs = stmt.executeQuery();
-    while(rs.next()) {
-        String department = rs.getString("dept");
-        ....
-    }
-}
-```
-
-### 在Python中查询
-
-```python
-from neo4j import GraphDatabase
-
-class HelloWorldExample:
-
-    def __init__(self, uri, user, password):
-        self.driver = GraphDatabase.driver(uri, auth=(user, password))
-
-    def close(self):
-        self.driver.close()
-
-    def print_greeting(self, message):
-        with self.driver.session() as session:
-            greeting = session.write_transaction(self._create_and_return_greeting, message)
-            print(greeting)
-
-    @staticmethod
-    def _create_and_return_greeting(tx, message):
-        result = tx.run("CREATE (a:Greeting) "
-                        "SET a.message = $message "
-                        "RETURN a.message + ', from node ' + id(a)", message=message)
-        return result.single()[0]
-
-
-if __name__ == "__main__":
-    greeter = HelloWorldExample("bolt://localhost:7687", "neo4j", "password")
-    greeter.print_greeting("hello, world")
-    greeter.close()
-```
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