C170 wgu already passed - Study guides, Class notes & Summaries

An entity is said to be X -dependent if it can exist in the database only when it is associated with another related entity occurrence. - existence A table that has all key attributes defined has no repeating groups and all its attributes are dependent on the primary key is said to be in X. - 1nf A determinant is any attribute whose value determines other values within a column. - F X is a process that is used for changing attributes to entities. - Normalization Any attribute whose value d...

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows returned used before group by ORDER BY - OC sorts columns

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows returned used before group by ORDER BY - OC sorts columns

WGU C170 Data Management - Applications - OA GSA1 Already Passed Add New Row INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, value3, ...); Update Row UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition; Delete Row DELETE FROM table_name WHERE condition; Inner Join SELECT column_name(s) FROM table1 INNER JOIN table2 ON n_name = n_name; CREATE VIEW CREATE VIEW viewname AS SELECT Col1, Col2 FROM table WHERE condition; Concatenate CONCAT(Col1, Co...

An entity is said to be X -dependent if it can exist in the database only when it is associated with another related entity occurrence. - existence A table that has all key attributes defined has no repeating groups and all its attributes are dependent on the primary key is said to be in X. - 1nf A determinant is any attribute whose value determines other values within a column. - F X is a process that is used for changing attributes to entities. - Normalization Any attribute whose value d...

An entity is said to be X -dependent if it can exist in the database only when it is associated with another related entity occurrence. - existence A table that has all key attributes defined has no repeating groups and all its attributes are dependent on the primary key is said to be in X. - 1nf A determinant is any attribute whose value determines other values within a column. - F X is a process that is used for changing attributes to entities. - Normalization Any attribute whose value d...

An entity is said to be X -dependent if it can exist in the database only when it is associated with another related entity occurrence. - existence A table that has all key attributes defined has no repeating groups and all its attributes are dependent on the primary key is said to be in X. - 1nf A determinant is any attribute whose value determines other values within a column. - F X is a process that is used for changing attributes to entities. - Normalization Any attribute whose value d...

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows returned used before group by ORDER BY - OC sorts columns

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows returned used before group by ORDER BY - OC sorts columns

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows returned used before group by ORDER BY - OC sorts columns