Question: Consider the following relational database schema. Primary key attributes are underlined. Arrows denote referential integrity constraints ( foreign keys ) . Attribute NoWeeks in relation

Consider the following relational database schema. Primary key attributes are underlined. Arrows denote
referential integrity constraints (foreign keys). Attribute NoWeeks in relation Assigned denotes the number of
weeks a scientist is assigned to a project. Attribute PI in relation Project denotes the primary investigator of a
project.
Consider the following relational database

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