Modeling of a non-relational database as a normalized relational database
A system and method are disclosed for modeling a non-relational database as a normalized relational database. In one embodiment, the system identifies a column having a first type in a column-oriented, non-relational database; determines whether the column-oriented, non-relational database includes at least one column having a second type and identifies the one or more columns having the second type; virtually divides the column-oriented, non-relational database based on column type; and generates a normalized, relational model based on the virtual division of the column-oriented, non-relational database, the normalized, relational model including catalog information representing a parent table including the column having the first type and, when the column-oriented, non-relational database includes at least one column having the second type, catalogue information representing a child table, the parent table and child table both represented as relational tables.
1. A method comprising:
receiving, using one or more processors, a relational query from a client;
obtaining, using the one or more processors, a relational model of a non-relational database, wherein the non-relational database includes a first element having a first type and a second element having a second type, and wherein the relational model represents the first element in a parent table and represents the second element in a child table, wherein the parent table and child table are both represented as relational tables; and
translating, using the one or more processors, the relational query into a non-relational query using the relational model.
2. The method of claim 1 comprising:
sending the non-relational query to the non-relational database;
receiving, using the one or more processors, a non-relational response from the non-relational database;
translating the non-relational response into a relational response; and
sending the relational response to the client.
3. The method of claim 1 , wherein the first type is static, and the first element includes a column common to data maintained in the non-relational database.
4. The method of claim 1 , wherein the first element is associated with a key.
5. The method of claim 1 , wherein the second type is dynamic, and the second element is associated with a sub-type.
6. The method of claim 1 , wherein the second element is associated with one or more of a set, a list, and a map.
7. The method of claim 1 , wherein the relational model of the non-relational database is generated based on a division of the non-relational database based on element type.
8. The method of claim 7 , wherein the division of the non-relational database based on the element type is a virtual division.
9. The method of claim 7 , wherein the relational model of the non-relational database is a normalized relational model.
10. A system comprising:
one or more processors; and
a non-transitory memory storing instructions that, when executed, by the one or more processors, cause the system to perform steps comprising:
receive a relational query from a client;
obtain a relational model of a non-relational database, wherein the non-relational database includes a first element having a first type and a second element having a second type, and wherein the relational model includes represents the first element in a parent table and represents the second element in a child table, wherein the parent table and child table are both represented as relational tables; and
translate the relational query into a non-relational query using the relational model.
11. The system of claim 10 , the instructions, when executed, further causing the system to perform steps comprising:
send the non-relational query to the non-relational database;
receive a non-relational response from the non-relational database;
translate the non-relational response into a relational response; and
send the relational response to the client.
12. The system of claim 10 , wherein the first type is static, and the first element includes a column common to data maintained in the non-relational database.
13. The system of claim 10 , wherein the first element is associated with a key.
14. The system of claim 10 , wherein the second type is dynamic, and the second element is associated with a sub-type.
15. The system of claim 10 , wherein the second element is associated with one or more of a set, a list, and a map.
16. The system of claim 10 , wherein the relational model of the non-relational database is generated based on a division the non-relational database based on element type.
17. The system of claim 16 , wherein the division of the non-relational database based on the element type is a virtual division.
18. The system of claim 16 , wherein the relational model of the non-relational database is a normalized relational model.