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philipxy

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Page: 1 2 3 ... 17
Title Δ
Is this natural join operation used correctly? (Relational Algebra) 0.00
Understanding trivial functional dependency from Sailboat book 0.00
Databases with Foreign Keys: Good way to picture forward vs. backwa... 0.00
Explanation of ER model to functional dependencies solution 0.00
How do primary keys work in junction tables for a DBMS? How can a c... 0.00
Joining multiple tables with single join clause (sqlite) -1.76
Why oracle doesn't allow creating fk on unique index? +2.16
How to model 2x2 entities (relational tables), in which 2 describe... 0.00
Does the less than symbol in SQL serve another purpose other than b... -2.36
Is this Entity-Relationship Diagram Correct? 0.00
Unrelated tables and time intervals +0.23
Foreign keys in first normal form? -1.40
SQL - Losing columns after a left join -1.95
Relational Algebra (sanity check): branches whose customers include... 0.00
What is a "dimension snapshot" in a functional data engin... 0.00
Modeling cyclic 1:N relations in database +2.14
Renormalizing when fields depend on non candidate keys but usage wo... 0.00
What determinants do I have in my entity? Trying to understand BCNF 0.00
Third Normal Form Conditions 0.00
The word "Must" or the word "Can" indicates Tot... 0.00
SQL Filtering when joining 0.00
Is the compiler allowed to constant-fold a local volatile? 0.00
Proving Lossless or Lossy Decomposition 0.00
Designing an ER diagram for Hockey League Database 0.00
SQLite3 Simulate RIGHT OUTER JOIN with LEFT OUTER JOIN's withou... 0.00
Could someone please give me an example of a 3NF *DECOMPOSITION* th... +2.43
Why did my WHERE clause affect my LEFT JOIN? -1.52
Pull data from two separate SQL tables based on a JOIN but that use... 0.00
Database design for timeseries in SQL 0.00
How to nest joins of subqueries in SQL? +0.05
Examination Question regarding Database Management System 0.00
Erroneous foreign key having many values per primary key value? 0.00
Understanding foreign keys +1.40
Count in Relational Algebra 0.00
Null in Relational Algebra 0.00
Venn Diagram for Natural Join 0.00
How to best represent an attribute that appears in both master and... 0.00
SQL - Referencing a table at a specific position in content? 0.00
Difference between Where and Join on Id -0.59
Normalization generates a table with no clear purpose 0.00
Is there a well-defined difference between "normalizing"... 0.00
New to database design, looking for suggestions -0.52
Is this table in first normal form? 0.00
Is it true that using INNER JOIN after any OUTER JOIN will essentia... -1.43
Find all pizzerias that serve ONLY pizzas eaten by people over 30 0.00
Translate to RA: bi-implication/equivalence +1.43
Usage of Σ and Σ+ in Normal Forms 0.00
Relation algebra predicate evaluation -0.02
Partial Keys in a Weak Entity Set +2.04
Understanding Division in Relational Algebra 0.00