Neo4j Graph DB: How to do time-based datamodelling for User->SecurityHoldings relationship
I am new to Neo4j Graph database and I am trying to do data-modelling of below User Investment holding information into the Graph DB:
I have a User entity:
(n:User)
"user_id": "1000001", "account_number":"1234500"
And a Securities entity:
(n:Security)
"security_id": "12001", "cusip_number":"NH0000909", "ISIN":"US61760X7782"
And I have a relationship between those 2 entities:
(User "user_id": "1000001")-[:HOLDS quatity: 150]->(Security "security_id": "12001")
It looks like this in Graphical format:
Now here is the major problem in this data model:
This relationship between the User and Securities is dynamic over time. Meaning the Security Quantity a User holds changes each day. But in above Graph the Quantity is fixed so some way needs to be added to show Quantity changing everyday for User's Securities.
There is another relationship between Security and DailyPrice. Meaning each Security's price will change each day. So how can I model this history information too? :
(Security "security_id": "12001")-[:HAS]->(DailyPrice date: 10/22/2018, price: 55.20, currency: USD)
Could you please help me with the correct data-modelling so that above 2 problems can be solved?
java graph neo4j cypher
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
add a comment |
I am new to Neo4j Graph database and I am trying to do data-modelling of below User Investment holding information into the Graph DB:
I have a User entity:
(n:User)
"user_id": "1000001", "account_number":"1234500"
And a Securities entity:
(n:Security)
"security_id": "12001", "cusip_number":"NH0000909", "ISIN":"US61760X7782"
And I have a relationship between those 2 entities:
(User "user_id": "1000001")-[:HOLDS quatity: 150]->(Security "security_id": "12001")
It looks like this in Graphical format:
Now here is the major problem in this data model:
This relationship between the User and Securities is dynamic over time. Meaning the Security Quantity a User holds changes each day. But in above Graph the Quantity is fixed so some way needs to be added to show Quantity changing everyday for User's Securities.
There is another relationship between Security and DailyPrice. Meaning each Security's price will change each day. So how can I model this history information too? :
(Security "security_id": "12001")-[:HAS]->(DailyPrice date: 10/22/2018, price: 55.20, currency: USD)
Could you please help me with the correct data-modelling so that above 2 problems can be solved?
java graph neo4j cypher
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
How is quantity determined? Do you need a historical record or just the current state? (1) is only a problem if you need the history, and (2) is stated as a fact, not a problem. In what way is your current model failing you?
– Tezra
Nov 15 '18 at 21:32
Hi @Tezra. Ofcourse as the title of this Question suggests, this is a Time based or History based data modelling problem. And yes I updated #2 so that it clearly states that both #1 and #2 requires storing History information for each Day i.e. in #1 I want Quatity information for each day and for #2 I want Seurity Price for each day.
– sunny_dev
Nov 16 '18 at 9:47
add a comment |
I am new to Neo4j Graph database and I am trying to do data-modelling of below User Investment holding information into the Graph DB:
I have a User entity:
(n:User)
"user_id": "1000001", "account_number":"1234500"
And a Securities entity:
(n:Security)
"security_id": "12001", "cusip_number":"NH0000909", "ISIN":"US61760X7782"
And I have a relationship between those 2 entities:
(User "user_id": "1000001")-[:HOLDS quatity: 150]->(Security "security_id": "12001")
It looks like this in Graphical format:
Now here is the major problem in this data model:
This relationship between the User and Securities is dynamic over time. Meaning the Security Quantity a User holds changes each day. But in above Graph the Quantity is fixed so some way needs to be added to show Quantity changing everyday for User's Securities.
There is another relationship between Security and DailyPrice. Meaning each Security's price will change each day. So how can I model this history information too? :
(Security "security_id": "12001")-[:HAS]->(DailyPrice date: 10/22/2018, price: 55.20, currency: USD)
Could you please help me with the correct data-modelling so that above 2 problems can be solved?
java graph neo4j cypher
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
I am new to Neo4j Graph database and I am trying to do data-modelling of below User Investment holding information into the Graph DB:
I have a User entity:
(n:User)
"user_id": "1000001", "account_number":"1234500"
And a Securities entity:
(n:Security)
"security_id": "12001", "cusip_number":"NH0000909", "ISIN":"US61760X7782"
And I have a relationship between those 2 entities:
(User "user_id": "1000001")-[:HOLDS quatity: 150]->(Security "security_id": "12001")
It looks like this in Graphical format:
Now here is the major problem in this data model:
This relationship between the User and Securities is dynamic over time. Meaning the Security Quantity a User holds changes each day. But in above Graph the Quantity is fixed so some way needs to be added to show Quantity changing everyday for User's Securities.
There is another relationship between Security and DailyPrice. Meaning each Security's price will change each day. So how can I model this history information too? :
(Security "security_id": "12001")-[:HAS]->(DailyPrice date: 10/22/2018, price: 55.20, currency: USD)
Could you please help me with the correct data-modelling so that above 2 problems can be solved?
java graph neo4j cypher
java graph neo4j cypher
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
edited Nov 16 '18 at 9:46
sunny_dev
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
asked Nov 14 '18 at 6:41
sunny_devsunny_dev
3693623
3693623
How is quantity determined? Do you need a historical record or just the current state? (1) is only a problem if you need the history, and (2) is stated as a fact, not a problem. In what way is your current model failing you?
– Tezra
Nov 15 '18 at 21:32
Hi @Tezra. Ofcourse as the title of this Question suggests, this is a Time based or History based data modelling problem. And yes I updated #2 so that it clearly states that both #1 and #2 requires storing History information for each Day i.e. in #1 I want Quatity information for each day and for #2 I want Seurity Price for each day.
– sunny_dev
Nov 16 '18 at 9:47
add a comment |
How is quantity determined? Do you need a historical record or just the current state? (1) is only a problem if you need the history, and (2) is stated as a fact, not a problem. In what way is your current model failing you?
– Tezra
Nov 15 '18 at 21:32
Hi @Tezra. Ofcourse as the title of this Question suggests, this is a Time based or History based data modelling problem. And yes I updated #2 so that it clearly states that both #1 and #2 requires storing History information for each Day i.e. in #1 I want Quatity information for each day and for #2 I want Seurity Price for each day.
– sunny_dev
Nov 16 '18 at 9:47
How is quantity determined? Do you need a historical record or just the current state? (1) is only a problem if you need the history, and (2) is stated as a fact, not a problem. In what way is your current model failing you?
– Tezra
Nov 15 '18 at 21:32
How is quantity determined? Do you need a historical record or just the current state? (1) is only a problem if you need the history, and (2) is stated as a fact, not a problem. In what way is your current model failing you?
– Tezra
Nov 15 '18 at 21:32
Hi @Tezra. Ofcourse as the title of this Question suggests, this is a Time based or History based data modelling problem. And yes I updated #2 so that it clearly states that both #1 and #2 requires storing History information for each Day i.e. in #1 I want Quatity information for each day and for #2 I want Seurity Price for each day.
– sunny_dev
Nov 16 '18 at 9:47
Hi @Tezra. Ofcourse as the title of this Question suggests, this is a Time based or History based data modelling problem. And yes I updated #2 so that it clearly states that both #1 and #2 requires storing History information for each Day i.e. in #1 I want Quatity information for each day and for #2 I want Seurity Price for each day.
– sunny_dev
Nov 16 '18 at 9:47
add a comment |
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How is quantity determined? Do you need a historical record or just the current state? (1) is only a problem if you need the history, and (2) is stated as a fact, not a problem. In what way is your current model failing you?
– Tezra
Nov 15 '18 at 21:32
Hi @Tezra. Ofcourse as the title of this Question suggests, this is a Time based or History based data modelling problem. And yes I updated #2 so that it clearly states that both #1 and #2 requires storing History information for each Day i.e. in #1 I want Quatity information for each day and for #2 I want Seurity Price for each day.
– sunny_dev
Nov 16 '18 at 9:47