Database design from a json file - database

Question

I have a json file like this
[
{
"topic": "Example1",
"ref": {
"1": "Example Topic",
"2": "Topic"
},
"contact": [
{
"ref": [
1
],
"corresponding": true,
"name": "XYZ"
},
{
"ref": [
1
],
"name": "ZXY"
},
{
"ref": [
1
],
"name": "ABC"
},
{
"ref": [
1,
2
],
"name":"BCA"
}
] ,
"type": "Presentation"
},
{
"topic": "Example2",
"ref": {
"1": "Example Topic",
"2": "Topic"
},
"contact": [
{
"ref": [
1
],
"corresponding": true,
"name": "XYZ"
},
{
"ref": [
1
],
"name": "ZXY"
},
{
"ref": [
1
],
"name": "ABC"
},
{
"ref": [
1,
2
],
"name":"BCA"
}
] ,
"type": "Poster"
}
]
I created 3 TablesItems,Reference,Contact one is
Items:
Item_ID
topic
type
reference:
ref_ID
content
Contact:
ref_ID
contact_ID
Item_ID
name
RelationShip :
1) Items has many references
2)Items has many Authors
3)Authors has many references
Now, my question is
1) Should I doing any wrong here?
2) is there any way to improve the my current implementation ?
3) Here I am confused about to implement the corresponding(inside the contact Array). How do I implement that in design ?
Thanks.

Answer 1

From your above Json., what I could infer is this normalized schema. You have 2 ref in your above Json. Could you clarify it?
Also, here a useful link for you., http://jsonviewer.stack.hu/ Switch between viewer and Text tabs.
The actual example from your scenario is.,
P- Primary Key
Ref - Reference Key
Topic:
--------------------------------------------------
Topic ID (P) | TopicName | TypeID (Ref)
----------------------------------------------------
0 Example1 0
1 Example2 1
TopicReferences :
----------------------------
TopicID (P) | RefernceID (Ref)
--------------------------------
0 0
0 1
1 0
1 1
Reference :
------------------------------------
ReferenceID (P) | ReferenceName
------------------------------------
0 Example Topic
1 Topic
Presentation Type :
--------------------------
TypeID (P) | TypeName
--------------------------
0 Presentation
1 Poster
TopicContacts:
---------------------------------
TopicID | ContactID (Ref)
---------------------------------
0 0
0 1
0 2
0 3
1 0
1 1
1 2
1 3
Contact:
-------------------------------------------------------------------
ContactID(P) | ContactName | IsCorresponding ( Boolean, nullable)
------------------------------------------------------------------
0 XYZ YES
1 ZXY NULL
2 ABC NULL
3 BCA NULL
ContactsReference2:
--------------------------------------------
ContactID | Reference2ID (Ref)
--------------------------------------------
0 0
1 0
2 0
3 0
3 1
Reference2:
--------------------------------------------
Reference2ID(P) | Reference2Value (NUM)
--------------------------------------------
0 1
1 2