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philipxy

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1512.61 (54,505th) 		Reputation
11,699 (12,666th)
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Title Δ
Self joins. Does Inner, Outer, or Left matter? -0.16
FK or FPK? Relational Databases -0.50
What foreign keys to add in 1:N relationship - Logical Model 0.00
Why can't you just join in fan trap? 0.00
Why guards are called 'guards'? 0.00
Why random operations on a B tree is not good? 0.00
Is this in BCNF, 3NF or neither? -1.59
Filter query with condition -0.36
Translate relational algebra relation to SQL (INTERSECT)? 0.00
Understanding Normalization & Duplicates - I Guess I Don't... -0.04
Why does Entity Framework (EF 6.0) generate a view and not a table... 0.00
Achieving BCNF by decomposition +2.42
How to efficiently check database object based on location/proximit... +0.50
Functional dependency and many-to-many relationships 0.00
2nd normal form violation with lhs of the dependency is composite (... 0.00
Queries in tuple relational calculus re employee department and min... 0.00
Break atomicity rule storing list of items when there is no reason... 0.00
mysql error 150 from referencing same foreign key column in two tab... +0.51
Reasonable Export of Relational to Non-Relational Data 0.00
Sequelize : how to join on foreign keys 0.00
Relation database design,one to many paradigm +1.98
Convert SQL SELECT query to corresponding/equivalent relational alg... 0.00
SQL/PHP How can I filter this with the use of a LEFT JOIN? -0.17
Should this ER diagram use a ternary relationship instead 0.00
Correct use of an association class +2.23
How does noSQL perform horizontal scaling and how it is more effici... +0.61
Normalizing the relation to third normal form 0.00
Is A → B the same as B → A when speaking of functional dependencies? 0.00
How do I find relations between tables that are long-distance relat... 0.00
What are the rules for merging two relations in a schema? +0.03
How to model students/courses/grades? 0.00
Definition of the fourth normal form in normalization 0.00
How to transform this into Boyce-Codd Normal Form? 0.00
BCNF Normalization and multiple candidate keys 0.00
Natural join when joining attributes contain duplicate tuples 0.00
Functional Dependency lhs has both prime and non-prime attributes 0.00
Why does SQLite insert duplicate composite primary keys? +2.37
Relational Algebra and Domain Relational Calculus for SQL Query 0.00
Organizing & normalising RSS Feed categories data 0.00
Relational algebra natural join of table q2 with rename of table q2... +2.99
Clarity regarding the schemas in a database 0.00
Why is this table in 3NF? -2.21
Eliminating Transitive Functional Dependecies 0.00
SQL normalizing having 2 dates & a duration that is both in one... +2.27
Will this left join on same table ever return data? +0.03
Explain non additive propery using a Boyce Codd Normal Form decompo... 0.00
Expressing "is null" in Relational algebra 0.00
Relational algebra: selecting range (between numbers) 0.00
Multi-Valued Dependencies? 0.00
Ternary relations, relational product and fields which are themselv... -0.49