Structural Analysis of Factual, Conceptual, Procedural, and Metacognitive Knowledge in a Multidimensional Knowledge Network

Table 3

Top five highly ranked nodes according to the weighted degree (o_ij), weighted in-degree (), and weighted out-degree () in a weighted monolayer network.

	Node	oij	Node		Node
Monolayer	Tables	62	Tables	34	Database_normalization	41
	Database_normalization	57	Primary_key	32	Tables	28
	Relation	41	Relation	31	Entity	25
	Foreign_key	38	Attributes	27	Database_scheme	23
	Entity	38	Columns	24	Database	23
Factual	Database_scheme	12	Database_scheme	12	Data	6
	Tables	10	Tables	10	Business_organisation	6
	Data	8	Information	6	Database	4
	Business_organisation	6	Database_ManagementSystem	4	Candidate_key	4
	Database	6	Relationships	4	Cardinality	4
Conceptual	Tables	29	Columns	18	Database	19
	Columns	24	Primary_key	18	Tables	14
	Database	23	Attributes	16	Referential_integrity	12
	Foreign_key	20	Tables	15	1NF	12
	Attributes	18	Rows	12	Database_scheme	11
Procedural	Database_normalization	52	Relation	22	Database_normalization	36
	Relation	26	Database_normalization	16	Relational_algebra	14
	3NF	17	Tables	9	3NF	11
	Tables	17	2NF	8	Projection	11
	Entity	16	Join	8	Entity	9
Metacognitive	Foreign_key	12	Foreign_key	12	2NF	7
	Query	11	Query	6	Business_organisation	6
	Relational_algebra	10	System	6	Entity	6
	Functional_dependency	9	Attributes	6	Tables	6
	Constraints	8	Primary_key	6	Query	5