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philipxy

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1512.61 (54,505th) 		Reputation
11,699 (12,666th)
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Title Δ
What is the best method to compare data using the join? 0.00
How to add +1 to each element of array till a maximum value(which i... -0.67
Inner Join returning nothing +0.01
Database normalization into 3NF or BCNF 0.00
How can I enforce second-degree relationships without composite keys? -0.72
Do we check Candidate Key in 1st Normal Form Table ONLY? 0.00
Find the reverse algorithm to go back to initial value -0.33
Creating a relationship based on columns that are NOT the primary k... -0.31
Sqlite: link entries to multiple entries (ingredients and recipes) 0.00
Usage of user ID as primary key in a large table -1.15
What MySQL table design is better on performance? +0.13
database design - least amount of space to make a lookup table -2.25
UNION statement not working, forced to use JOIN (Performance domina... -1.61
will my database breaks in this case +0.49
What are the basic rules for defining entities, attributes, and rel... +0.52
Minimum no of tables that exists after decomposing relation R into... 0.00
Relational database schema - Relationship and Foreign keys +1.33
Database Design to Search Multiple Colors 0.00
A valid case for a single-column ID table? 0.00
Relational algebra 0.00
Unable to figure how to manage foreign keys for 'project-custom... 0.00
How are these tables related? -0.67
Example of when you should use a foreign key that points to a candi... 0.00
Listing functional dependencies - include transitive or multivalued? +0.13
Relationships (Foreign Keys) in mySQL 0.00
What are the academic names for the left and right operands in bina... +0.51
FD and databases -1.43
What is a self join for? (in english) -1.93
Find the closures of a set of attributes given a relation and FDs 0.00
purpose of using one to one,many to one/one to many and many to many +0.00
Is an FD(functional dependency) fully fd when x->y and z->y w... +2.23
Purpose of using projections in vertica database -0.49
No primary key vs Composite primary Key -0.11
Shared Primary Key for multiple tables -0.15
Many to many relationship with itself 0.00
Period Slot System Design 0.00
How to store data that can be either a numeric range or a numeric v... +2.29
Can GCC warn me about modifying the fields of a const struct in C99? -1.53
Entity Relationship Diagram - Where are the purchases? +0.07
Should I use a compound primary key here or is UNIQUE(fk1, fk2) a b... +0.01
Database design of managing clients for multiple businesses 0.00
Database Management - closure of functional dependencies 0.00
Normalising schema with transitive relation 0.00
Database query issue, can someone help me fix this issue 0.00
sql search data between month 0.00
How do you design a database relationship when you are not sure whi... +0.08
How can I translate an Excel table into a Relational Database Table... 0.00
Functional Dependencies and Primary Keys -1.61
Exist and Not Exists Query Misunderstanding? +1.99
Does facebook satisfy the 2nd Normalization Form? 0.00